Maelstrom Nexus is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.
Official card text
The first spell you cast each turn has cascade. (When you cast your first spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)
Complete guide
Maelstrom Nexus is a powerhouse enchantment that embodies the chaotic energy of Alara, turning your very first move each turn into a potential double-play. By granting the Cascade ability to your first spell, it ensures that your momentum never slows down, digging through your library for extra value. Whether you are playing on your own turn or casting an instant on an opponent's turn, the Nexus is ready to ripple through your deck.
What It Does
Maelstrom Nexus grants Cascade to the very first spell you cast during every single turn. Cascade is a triggered ability that occurs when you cast a spell; it forces you to exile cards from the top of your library until you find a nonland card with a lower mana value than the original spell. You then get the choice to cast that new card for free, while everything else exiled this way goes to the bottom of your library in a random order.
How It Resolves Step by Step
First, you cast your spell and pay its costs; the Cascade trigger then goes on the stack above that spell. Second, you begin exiling cards from the top of your library face-up for all players to see. Once you hit a nonland card with a mana value strictly less than the spell that triggered it, you stop exiling. Third, you choose whether to cast that card without paying its mana cost. If you do, the new spell goes on top of the stack and will resolve before the original spell that started the process. Finally, all other exiled cards are put on the bottom of your library randomly.
Common Mistakes
The most frequent error involves timing: Maelstrom Nexus checks if a spell was the first one cast that turn, even if the Nexus wasn't on the field yet. If you cast Maelstrom Nexus itself, it is the first spell of that turn, so it does not give itself Cascade. Additionally, remember that mana value is determined solely by the printed cost in the corner of the card. Cost reductions or increases (like tax effects) do not change the mana value for Cascade's comparison check.
When to Play It
To maximize Maelstrom Nexus, you want to include high-cost spells to increase the range of cards Cascade can hit. Because it triggers on the first spell of *each* turn, having Instants or cards with Flash allows you to get a free Cascade trigger on your opponents' turns as well. It is a long-term value engine that rewards decks capable of stabilizing the board while they wait for the Five-Color investment to pay off.
Interaction examples
Doubling SeasonIf Maelstrom Nexus is on the battlefield and you cast Doubling Season as your first spell of the turn, Cascade triggers. Since Doubling Season has a mana value of 5, you exile cards until you find a nonland card with a mana value of 4 or less. If you find a spell you like, you cast it for free, and it will resolve before Doubling Season even enters the battlefield.
Smothering TitheSuppose you cast Smothering Tithe (mana value 4) as your first spell on your opponent's turn using an effect that gives it Flash. Maelstrom Nexus grants it Cascade. You will exile cards until you find a nonland card with a mana value of 3 or less. This allows you to potentially put a defensive spell or more ramp onto the table while Smothering Tithe is still waiting to resolve.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Maelstrom Nexus
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
The mana value of a split card is determined by the combined mana cost of its two halves. If cascade allows you to cast a split card, you may cast either half but not both halves.
No other card is named in this ruling.
- #2· Wizards of the Coast
If the card has
in its mana cost, you must choose 0 as the value of X when casting it without paying its mana cost.No other card is named in this ruling.
- #3· Wizards of the Coast
Due to a 2021 rules change to cascade, not only do you stop exiling cards if you exile a nonland card with lesser mana value than the spell with cascade, but the resulting spell you cast must also have lesser mana value. Previously, in cases where a card's mana value differed from the resulting spell, such as with some modal double-faced cards or cards with an Adventure, you could cast a spell with a higher mana value than the exiled card.
No other card is named in this ruling.
- #4· Wizards of the Coast
A spell's mana value is determined only by its mana cost. Ignore any alternative costs, additional costs, cost increases, or cost reductions.
No other card is named in this ruling.
- #5· Wizards of the Coast
Cascade triggers when you cast the spell, meaning that it resolves before that spell. If you end up casting the exiled card, it will go on the stack above the spell with cascade.
No other card is named in this ruling.
- #6· Wizards of the Coast
When the cascade ability resolves, you must exile cards. The only optional part of the ability is whether or not you cast the last card exiled.
No other card is named in this ruling.
- #7· Wizards of the Coast
If a spell with cascade is countered, the cascade ability will still resolve normally.
No other card is named in this ruling.
- #8· Wizards of the Coast
You exile the cards face up. All players will be able to see them.
No other card is named in this ruling.
- #9· Wizards of the Coast
If you cast a card "without paying its mana cost," you can't choose to cast it for any alternative costs. You can, however, pay additional costs. If the card has any mandatory additional costs, you must pay those to cast the card.
No other card is named in this ruling.
- #10· Wizards of the Coast
If the first spell you cast in a turn already has cascade, both cascade abilities will trigger separately. Deal with them one at a time: First one cascade ability will resolve, and you'll cast the applicable card if you want. That new spell will resolve. Then the other cascade ability will resolve in the same way. Finally, the original spell will resolve.
No other card is named in this ruling.
- #11· Wizards of the Coast
This effect takes into account spells that were cast earlier in the turn before Maelstrom Nexus entered the battlefield, including any spells still on the stack. If you've already cast any spells that turn (including Maelstrom Nexus itself), this ability won't give any of your spells cascade that turn.
No other card is named in this ruling.
Legal formats
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