Possibility Storm

Enchantment    (CMC:5)

Whenever a player casts a spell from his or her hand, that player exiles it, then exiles cards from the top of his or her library until he or she exiles a card that shares a card type with it. That player may cast that card without paying its mana cost. Then he or she puts all cards exiled with Possibility Storm on the bottom of his or her library in a random order.

34 DGM • ENJason Felix

™ & © 1993—2013 Wizards of the Coast

Legal in: Modern,Extended,Return to Ravnica Block,Legacy,Vintage,Freeform,Prismatic,Tribal Wars Legacy,Tribal Wars Standard,Classic,Singleton 100,Commander

Oracle Text (click to copy):

Possibility Storm {3}{R}{R} Enchantment Whenever a player casts a spell from his or her hand, that player exiles it, then exiles cards from the top of his or her library until he or she exiles a card that shares a card type with it. That player may cast that card without paying its mana cost. Then he or she puts all cards exiled with Possibility Storm on the bottom of his or her library in a random order.

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View this MTG card on Gatherer

4/15/2013
Artifact, creature, enchantment, instant, land, planeswalker, sorcery, and tribal are card types. Two cards share a card type if they have at least one card type in common.
4/15/2013
The original spell is part of the group of exiled cards put on the bottom of the library in a random order. If the exiled card that shared a card type with that card wasn't cast, it's also part of this group.
4/15/2013
If Possibility Storm's ability doesn't exile the original spell (perhaps because another Possibility Storm already exiled it), you'll still exile cards from the top of your library until you exile a card that shares a card type with it and have the opportunity to cast that spell.
4/15/2013
If you cast a spell without paying its mana cost, you can't pay any alternative costs, such as overload costs. You can pay additional costs, such as kicker costs. If the spell has any mandatory additional costs, you must pay those.
4/15/2013
If the spell you cast from exile has X in its mana cost, you must choose 0 as its value.
4/15/2013
Instant and sorcery cards with miracle allow a player to cast a card immediately upon drawing it. If a player casts a spell this way, the spell is cast from that player's hand. Possibility Storm will trigger.

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Card Possibility Storm is not on TCGPlayer.