M:tG card similarity search
2 · Artifact
{X}: You may choose a creature card in your hand whose mana cost could be paid by some amount of, or all of, the mana you spent on {X}. If you do, you may cast that card face down as a 2/2 creature spell without paying its mana cost. If the creature that spell becomes as it resolves has not been turned face up and would assign or deal damage, be dealt damage, or become tapped, instead it's turned face up and assigns or deals damage, is dealt damage, or becomes tapped. Activate only as a sorcery.
| Name | Mana | Type | Text |
|---|---|---|---|
| Lair of the Hydra | Land | If you control two or more other lands, Lair of the Hydra enters the battlefield tapped. {T}: Add {G}. {X}{G}: Until end of turn, Lair of the Hydra becomes an X/X green Hydra creature. It's still a land. X can't be 0. | |
| Zaffai, Thunder Conductor | 2UR | Legendary Creature — Human Shaman | Magecraft — Whenever you cast or copy an instant or sorcery spell, scry 1. If that spell's mana value is 5 or greater, create a 4/4 blue and red Elemental creature token. If that spell's mana value is 10 or greater, Zaffai, Thunder Conductor deals 10 damage to an opponent chosen at random. 1/4 |
| James, Wandering Dad | 2U | Legendary Creature — Human Scientist | {T}: Add {C}{C}. Spend this mana only to activate abilities. 2/4 |
| Skaab Ruinator | 1UU | Creature — Zombie Horror | As an additional cost to cast this spell, exile three creature cards from your graveyard. Flying You may cast Skaab Ruinator from your graveyard. 5/6 |
| Betrayal | U | Enchantment — Aura | Enchant creature an opponent controls Whenever enchanted creature becomes tapped, you draw a card. |
| 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. |
| Kheru Mind-Eater | 2B | Creature — Vampire | Menace Whenever Kheru Mind-Eater deals combat damage to a player, that player exiles a card from their hand face down. You may look at cards exiled with Kheru Mind-Eater, and you may play lands and cast spells from among those cards. 1/3 |
| Relic Ward | 1W | Enchantment — Aura | You may cast Relic Ward as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step. Enchant artifact Enchanted artifact has shroud. (It can't be the target of spells or abilities.) |
| Leyline of Lightning | 2RR | Enchantment | If Leyline of Lightning is in your opening hand, you may begin the game with it on the battlefield. Whenever you cast a spell, you may pay {1}. If you do, Leyline of Lightning deals 1 damage to target player or planeswalker. |
| Discover the Formula | 4UU | Instant | Seek three nonland cards, then nonland cards in your hand perpetually gain "This spell costs {1} less to cast." |