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 |
|---|---|---|---|
| Racketeer Boss | RG | Creature — Cat Warrior | When Racketeer Boss enters the battlefield, choose up to two creature and/or planeswalker cards in your hand. They perpetually gain "When you cast this spell, create a Treasure token and this spell perpetually loses this ability." 3/2 |
| Undersimplify | 1U | Instant | Choose target spell. If it's a creature spell, it perpetually gets -2/-0. Counter that spell unless its controller pays {2}. |
| Squee's Revenge | 1UR | Sorcery | Choose a number. Flip a coin that many times or until you lose a flip, whichever comes first. If you win all the flips, draw two cards for each flip. |
| Hazoret's Undying Fury | 4RR | Sorcery | Shuffle your library, then exile the top four cards. You may cast any number of spells with mana value 5 or less from among them without paying their mana costs. Lands you control don't untap during your next untap step. |
| Balduvian Atrocity | 2B | Creature — Phyrexian Berserker | Kicker {R} (You may pay an additional {R} as you cast this spell.) Menace When Balduvian Atrocity enters the battlefield, if it was kicked, return target creature card with mana value 3 or less from your graveyard to the battlefield. It gains haste. Sacrifice it at the beginning of the next end step. 2/3 |
| Naga Oracle | 3U | Creature — Naga Cleric | When Naga Oracle enters the battlefield, surveil 3. (Look at the top three cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) 2/4 |
| Skull Saucer | 4BB | Creature — Zombie Head | Flying When Skull Saucer enters the battlefield, destroy target creature and put your head on the table. Sacrifice Skull Saucer when your head stops touching the table. 4/1 |
| Withering Wisps | 1BB | Enchantment | At the beginning of the end step, if no creatures are on the battlefield, sacrifice Withering Wisps. {B}: Withering Wisps deals 1 damage to each creature and each player. Activate no more times each turn than the number of snow Swamps you control. |
| Plaxmanta | 1U | Creature — Beast | Flash When Plaxmanta enters the battlefield, creatures you control gain shroud until end of turn. (They can't be the targets of spells or abilities.) When Plaxmanta enters the battlefield, sacrifice it unless {G} was spent to cast it. 2/2 |
| A-Sorcerer Class | UR | Enchantment — Class | (Gain the next level as a sorcery to add its ability.) When Sorcerer Class enters the battlefield, draw two cards, then discard two cards. {U}{R}: Level 2 Creatures you control have "{T}: Add {U} or {R}. Spend this mana only to cast an instant or sorcery spell or to gain a Class level." {1}{U}{R}: Level 3 Whenever you cast an instant or sorcery spell, that spell deals damage to each opponent equal to the number of instant and sorcery spells you've cast this turn. |