M:tG card similarity search
3WU · Legendary Creature — Time Lord Doctor
Whenever The Seventh Doctor attacks, choose a card in your hand. Defending player guesses whether that card's mana value is greater than the number of artifacts you control. If they guessed wrong, you may cast it without paying its mana cost. If you don't cast a spell this way, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.") 3/6
| Name | Mana | Type | Text |
|---|---|---|---|
| Common Courtesy | 2UU | Enchantment | Whenever a player casts a spell without asking your permission while casting it, counter that spell. When a player asks you permission to cast a spell and you refuse, counter that spell and sacrifice Common Courtesy. |
| Imperiosaur | 2GG | Creature — Dinosaur | Spend only mana produced by basic lands to cast this spell. 5/5 |
| Umbra Stalker | 4BBB | Creature — Elemental | Chroma — Umbra Stalker's power and toughness are each equal to the number of black mana symbols in the mana costs of cards in your graveyard. */* |
| Outrage Shaman | 3RR | Creature — Goblin Shaman | Chroma — When Outrage Shaman enters the battlefield, it deals damage to target creature equal to the number of red mana symbols in the mana costs of permanents you control. 2/2 |
| Force of Negation | 1UU | Instant | If it's not your turn, you may exile a blue card from your hand rather than pay this spell's mana cost. Counter target noncreature spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard. |
| Leaf-Crowned Elder | 2GG | Creature — Treefolk Shaman | Kinship — At the beginning of your upkeep, you may look at the top card of your library. If it shares a creature type with Leaf-Crowned Elder, you may reveal it. If you do, you may play that card without paying its mana cost. 3/5 |
| Cabal Conditioning | 6B | Sorcery | Any number of target players each discard a number of cards equal to the highest mana value among permanents you control. |
| Ride the Avalanche | GU | Instant | The next spell you cast this turn can be cast as though it had flash. When you next cast a spell this turn, put X +1/+1 counters on up to one target creature, where X is the mana value of that spell. |
| Inferno Trap | 3R | Instant — Trap | If you've been dealt damage by two or more creatures this turn, you may pay {R} rather than pay this spell's mana cost. Inferno Trap deals 4 damage to target creature. |
| Land Grant | 1G | Sorcery | If you have no land cards in hand, you may reveal your hand rather than pay this spell's mana cost. Search your library for a Forest card, reveal that card, put it into your hand, then shuffle. |