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 |
|---|---|---|---|
| Emperor Crocodile | 3G | Creature — Crocodile | When you control no other creatures, sacrifice Emperor Crocodile. 5/5 |
| Cultural Exchange | 4UU | Sorcery | Choose any number of creatures target player controls. Choose the same number of creatures another target player controls. Those players exchange control of those creatures. (This effect lasts indefinitely.) |
| Tempt with Reflections | 3U | Sorcery | Tempting offer — Choose target creature you control. Create a token that's a copy of that creature. Each opponent may create a token that's a copy of that creature. For each opponent who does, create a token that's a copy of that creature. |
| Twinflame | 1R | Sorcery | Strive — This spell costs {2}{R} more to cast for each target beyond the first. Choose any number of target creatures you control. For each of them, create a token that's a copy of that creature, except it has haste. Exile those tokens at the beginning of the next end step. |
| Retribution | 2RR | Sorcery | Choose two target creatures an opponent controls. That player chooses and sacrifices one of those creatures. Put a -1/-1 counter on the other. |
| Tethmos High Priest | 2W | Creature — Cat Cleric | Heroic — Whenever you cast a spell that targets Tethmos High Priest, return target creature card with mana value 2 or less from your graveyard to the battlefield. 2/3 |
| Appetite for Brains | B | Sorcery | Target opponent reveals their hand. You choose a card from it with mana value 4 or greater and exile that card. |
| Void Winnower | 9 | Creature — Eldrazi | Your opponents can't cast spells with even mana values. (Zero is even.) Your opponents can't block with creatures with even mana values. 11/9 |
| Archmage Emeritus | 2UU | Creature — Human Wizard | Magecraft — Whenever you cast or copy an instant or sorcery spell, draw a card. 2/2 |
| Dance with Calamity | 7R | Sorcery | Shuffle your library. As many times as you choose, you may exile the top card of your library. If the total mana value of the cards exiled this way is 13 or less, you may cast any number of spells from among those cards without paying their mana costs. |