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Creative Technique
Sorcery
rare
Demonstrate (When you cast this spell, you may copy it. If you do, choose an opponent to also copy it.) Shuffle your library, then reveal cards from the top of it until you reveal a nonland card. Exile that card and put the rest on the bottom of your library in a random order. You may cast the exiled card without paying its mana cost.
Card Kingdom
CardmarketSemantic Tags
A keyword ability that lets you exile cards from your graveyard rather than pay generic mana to cast a spell. See rule 702.66, “Delve.”
A keyword ability that allows a player to cast a double-faced card transformed from the graveyard. See rule 702.146, “Disturb.”
A keyword ability that lets a player cast a card they discard. See rule 702.35, “Madness.”
Format Legality
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Printings (4)
| Set | Rarity | TCGplayer | Card Kingdom | Cardmarket |
|---|---|---|---|---|
| Secrets of Strixhaven Commander#241 | rare | · | · | · |
| Magic Online Promos#90122 | rare | · | · | · |
| Commander 2021#49 | rare | · | · | · |
| Commander 2021#376 | rare | · | · | · |
Related Concepts
A triggered ability found on some spells that let its controller copy it and choose an opponent to also copy it. See rule 702.144, “Demonstrate.”
Related Rules
After resolving a madness triggered ability (see rule 702.35), if the exiled card wasn’t cast and was moved to a public zone, effects referencing the discarded card can find that object.
Demonstrate
Madness
Madness is a keyword that represents two abilities. The first is a static ability that functions while the card with madness is in a player’s hand. The second is a triggered ability that functions when the first ability is applied. “Madness [cost]” means “If a player would discard this card, that player discards it, but exiles it instead of putting it into their graveyard” and “When this card is exiled this way, its owner may cast it by paying [cost] rather than paying its mana cost. If that player doesn’t, they put this card into their graveyard.”
Casting a spell using its madness ability follows the rules for paying alternative costs in rules 601.2b and 601.2f–h.
After resolving a madness triggered ability, if the exiled card wasn’t cast and was moved to a public zone, effects referencing the discarded card can find that card. See rule 400.7k.
Delve
Delve is a static ability that functions while the spell with delve is on the stack. “Delve” means “For each generic mana in this spell’s total cost, you may exile a card from your graveyard rather than pay that mana.”
Rulings
If the spell requires targets, you choose the target of the original spell as you cast it. If you create a copy of the spell, you may choose new targets for the copy as you create that copy. Similarly, the opponent you chose to create a copy may choose new targets for that copy as it's created. In other words, your opponent will know the targets of your original spell and your copy when choosing the new targets, if any, for their copy.
If you cast the spell and choose not to copy it, no opponent will get to copy it either.
This means that if you cast a spell with demonstrate and both you and an opponent copy it, the opponent's copy will resolve first, then your copy will resolve, and finally the original spell will resolve.
You choose whether to make a copy as the demonstrate ability resolves. This happens before the original spell resolves. Your copy goes on the stack above the original spell.
If you copy a spell with demonstrate, you then immediately choose an opponent. If they copy the spell, it goes on top of the stack.