Cosmium Confluence 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
Choose three. You may choose the same mode more than once. • Search your library for a Cave card, put it onto the battlefield tapped, then shuffle. • Put three +1/+1 counters on a Cave you control. It becomes a 0/0 Elemental creature with haste. It's still a land. • Destroy target enchantment.
Complete guide
Cosmium Confluence is a versatile green sorcery that serves as a powerful utility tool for Cave-themed decks. Whether you need to ramp, build an army, or handle troublesome enchantments, this spell offers the flexibility to mix and match its effects to suit the current board state.
What it Does
Cosmium Confluence allows you to choose three modes, and unlike many other modal spells, you can pick the same mode multiple times. It can fetch Cave lands from your library, transform those Caves into 0/0 Elemental creatures with three +1/+1 counters and haste, or destroy enchantments on the battlefield.
How it Resolves Step by Step
First, you choose your modes and any required targets (specifically for the destruction mode) while casting the spell. Upon resolution, you follow the modes in the order printed on the card. If you chose to search for a Cave and then animate one, the Cave you just found will be on the battlefield in time to receive the counters. Note that the second mode does not target; you choose which Cave to animate only when the spell is actually resolving.
Common Mistakes
A common error is forgetting the order of operations. You cannot destroy an enchantment before searching for a land, as the card instructions must be followed from top to bottom. Additionally, keep in mind that if you choose the third mode and the target enchantment becomes illegal (e.g., it gains Hexproof), that specific instance of the mode will fail to resolve. If all chosen targets for the spell become illegal, the entire spell is countered.
When to Play It
This spell is best utilized mid-game to stabilize your mana base or late-game to create immediate threats. Because the animated lands gain haste, you can use the first and second modes together to create a surprise 3/3 attacker even if you started the turn with no creatures.
Interaction examples
If you choose the first mode once and the second mode twice, you first search your library for a Cave and put it onto the battlefield tapped. Then, you can choose that same Cave to receive three +1/+1 counters twice. The land becomes a 6/6 Elemental creature with haste, though it remains tapped because the first mode put it into play tapped.
Rishkar's ExpertiseAfter drawing cards with Rishkar's Expertise, you may cast Cosmium Confluence for free since its mana value is 5. This allows you to refill your hand and immediately impact the board by destroying up to three enchantments or fetching more Caves to prepare for your next turn.
Skyshroud ClaimWhile Skyshroud Claim is efficient for fetching two Forests to the battlefield untapped, Cosmium Confluence is more specific but flexible. You can use all three modes to search for three different Caves, but unlike Skyshroud Claim, these lands will always enter the battlefield tapped regardless of their individual card types.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Cosmium Confluence
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
You choose the modes as you cast the spell. Once modes are chosen, they can't be changed.
No other card is named in this ruling.
- #2· Wizards of the Coast
If a mode requires a target, you can select that mode only if there's a legal target available. Ignore the targeting requirements for modes you don't choose. Each time you select that mode, you can choose a different target, or you can choose the same target.
No other card is named in this ruling.
- #3· Wizards of the Coast
Notably, the second mode doesn't require any targets. You choose the Cave you control that will be affected as Cosmium Confluence is resolving. You may choose a Cave you just put onto the battlefield with the first mode, if applicable.
No other card is named in this ruling.
- #4· Wizards of the Coast
No matter which combination of modes you choose, you always follow the instructions in the order they are written.
No other card is named in this ruling.
- #5· Wizards of the Coast
If the same mode is chosen more than once, you choose their relative order as you cast the spell. For example, if you choose the last mode of Cosmium Confluence more than once, you choose the relative order to destroy the target enchantments.
No other card is named in this ruling.
- #6· Wizards of the Coast
No player can cast spells or activate abilities in between the modes of a resolving spell. Any abilities that trigger won't be put onto the stack until a spell is done resolving.
No other card is named in this ruling.
- #7· Wizards of the Coast
If a Confluence is copied, the effect that creates the copy will usually allow you to choose new targets, but you can't choose new modes.
No other card is named in this ruling.
- #8· Wizards of the Coast
If all targets for the chosen modes become illegal before a Confluence resolves, the spell will be countered and none of its effects will happen. If at least one target is still legal, the spell will resolve but will have no effect on any illegal targets.
No other card is named in this ruling.
Legal formats
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Meta decks with Cosmium Confluence
No archived Top 8 deck with this card yet.