M:tG card similarity search
3RR · Enchantment
Whenever a player casts a spell from their hand, that player exiles it, then exiles cards from the top of their library until they exile a card that shares a card type with it. That player may cast that card without paying its mana cost. Then they put all cards exiled with Possibility Storm on the bottom of their library in a random order.
| Name | Mana | Type | Text |
|---|---|---|---|
| Bane Alley Broker | 1UB | Creature — Human Rogue | {T}: Draw a card, then exile a card from your hand face down. You may look at cards exiled with Bane Alley Broker. {U}{B}, {T}: Return a card exiled with Bane Alley Broker to its owner's hand. 0/3 |
| Widespread Thieving | 2R | Enchantment | Hideaway 5 (When this enchantment enters the battlefield, look at the top five cards of your library, exile one face down, then put the rest on the bottom in a random order.) Whenever you cast a multicolored spell, create a Treasure token. Then you may pay {W}{U}{B}{R}{G}. If you do, you may play the exiled card without paying its mana cost. |
| Jacob Hauken, Inspector | 1U | Legendary Creature — Human Advisor | {T}: Draw a card, then exile a card from your hand face down. You may look at that card for as long as it remains exiled. You may pay {4}{U}{U}. If you do, transform Jacob Hauken, Inspector. 0/2 |
| Signature Spells | 4UU | Enchantment | When Signature Spells enters the battlefield, seek two instant and/or sorcery cards with mana value 3, then exile them. At the beginning of your upkeep, you may copy a card exiled with Signature Spells. You may cast the copy without paying its mana cost. |
| Doomsday | BBB | Sorcery | Search your library and graveyard for five cards and exile the rest. Put the chosen cards on top of your library in any order. You lose half your life, rounded up. |
| Oblivion Sower | 6 | Creature — Eldrazi | When you cast this spell, target opponent exiles the top four cards of their library, then you may put any number of land cards that player owns from exile onto the battlefield under your control. 5/8 |
| Mindleech Mass | 5UBB | Creature — Horror | Trample Whenever Mindleech Mass deals combat damage to a player, you may look at that player's hand. If you do, you may cast a spell from among those cards without paying its mana cost. 6/6 |
| Wildfire Devils | 3R | Creature — Devil | When Wildfire Devils enters the battlefield and at the beginning of your upkeep, choose a player at random. That player exiles an instant or sorcery card from their graveyard. Copy that card. You may cast the copy without paying its mana cost. 4/2 |
| Moonring Mirror | 5 | Artifact | Whenever you draw a card, exile the top card of your library face down. At the beginning of your upkeep, you may exile all cards from your hand face down. If you do, put all other cards you own exiled with Moonring Mirror into your hand. |
| Rona, Tolarian Obliterator | Legendary Creature — Phyrexian Wizard | Trample Whenever a source deals damage to Rona, Tolarian Obliterator, that source's controller exiles a card from their hand at random. If it's a land card, you may put it onto the battlefield under your control. Otherwise, you may cast it without paying its mana cost. 5/5 |