M:tG card similarity search
1U · Artifact — Clue
As Ominous Lockbox enters the battlefield, secretly choose a number between 1 and 20. When an opponent casts a spell with mana value equal to the chosen number, sacrifice Ominous Lockbox. If you do, copy that spell, and you may choose new targets for the copy. {2}, Sacrifice Ominous Lockbox: Draw a card.
| Name | Mana | Type | Text |
|---|---|---|---|
| Wandering Archaic | 5 | Creature — Avatar | Whenever an opponent casts an instant or sorcery spell, they may pay {2}. If they don't, you may copy that spell. You may choose new targets for the copy. 4/4 |
| Hive Mind | 5U | Enchantment | Whenever a player casts an instant or sorcery spell, each other player copies that spell. Each of those players may choose new targets for their copy. |
| Howl of the Horde | 2R | Sorcery | When you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy. Raid — If you attacked this turn, when you next cast an instant or sorcery spell this turn, copy that spell an additional time. You may choose new targets for the copy. |
| Sudden Substitution | 2UU | Instant | Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Exchange control of target noncreature spell and target creature. Then the spell's controller may choose new targets for it. |
| Reflective Golem | 3 | Artifact Creature — Golem | Whenever you cast an instant or sorcery spell that targets only Reflective Golem, you may pay {2}. If you do, copy that spell. You may choose new targets for the copy. 2/3 |
| Mirari | 5 | Legendary Artifact | Whenever you cast an instant or sorcery spell, you may pay {3}. If you do, copy that spell. You may choose new targets for the copy. |
| Split Decision | 1U | Instant | Will of the council — Choose target instant or sorcery spell. Starting with you, each player votes for denial or duplication. If denial gets more votes, counter the spell. If duplication gets more votes or the vote is tied, copy the spell. You may choose new targets for the copy. |
| Dualcaster Mage | 1RR | Creature — Human Wizard | Flash When Dualcaster Mage enters the battlefield, copy target instant or sorcery spell. You may choose new targets for the copy. 2/2 |
| Chain of Acid | 3G | Sorcery | Destroy target noncreature permanent. Then that permanent's controller may copy this spell and may choose a new target for that copy. |
| Storm King's Thunder | XRRR | Instant | When you next cast an instant or sorcery spell this turn, copy that spell X times. You may choose new targets for the copies. |