Delightful Discovery 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
This spell costsless to cast for each spell your opponents have cast this turn. Scry 2, then draw two cards. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)
Complete guide
Delightful Discovery is a powerful instant that rewards you for waiting until your opponents have made their moves. By capitalizing on your opponents' actions, you can refill your hand and fix your draws for a very low mana investment. It is the perfect tool for control players who want to maintain card advantage while keeping their mana open.
What it Does
Delightful Discovery is a card-filtering and draw spell that costs 5 mana normally. However, its cost is reduced by 1 generic mana for every spell your opponents have cast during the current turn. Regardless of how many spells were cast, the blue mana requirement must always be met; the cost can never be lower than a single blue mana.
How it Resolves Step by Step
First, you calculate the cost based on spells cast by opponents and pay the mana. When the spell resolves, you perform a Scry 2: you look at the top two cards of your library and choose to put any number of them on the bottom and the rest on top in any order. Immediately after scrying, you draw two cards. This sequence ensures you can filter out dead draws before the actual card draw occurs.
Common Mistakes
A common error is confusing Mana Value with the cost paid. Even if you cast Delightful Discovery for only one blue mana, its Mana Value remains 5. This is important for cards that care about the cost of spells on the stack. Additionally, remember that the cost reduction only counts spells cast by opponents, not spells you have cast yourself.
When to Play It
The best time to cast this is on an opponent's turn after they have cast two or more spells, such as during a counter-war or after they have developed their board. This allows you to spend as little as one or two mana to dig four cards deep into your library at instant speed.
Interaction examples
If your opponent casts two spells and you counter the second one with Force of Will, your opponent has still cast two spells this turn. When you cast Delightful Discovery afterwards, it will cost 2 less, meaning you only pay 2U.
If an opponent casts a spell before attacking, Delightful Discovery costs 4 mana. You can cast it to Scry 2, looking for an Aetherize to handle the incoming attackers. If you find Aetherize, you put it on top of your library during the scry and then draw it immediately with the 'draw two cards' instruction.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Delightful Discovery
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions. The mana value of the spell remains unchanged, no matter what the total cost to cast it was.
No other card is named in this ruling.
- #2· Wizards of the Coast
Delightful Discovery's first ability can't reduce its cost below
.
No other card is named in this ruling.
Legal formats
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Meta decks with Delightful Discovery
No archived Top 8 deck with this card yet.



Force of Will
Aetherize