M:tG card similarity search
3UU · Enchantment
As Psychic Allergy enters the battlefield, choose a color. At the beginning of each opponent's upkeep, Psychic Allergy deals X damage to that player, where X is the number of nontoken permanents of the chosen color they control. At the beginning of your upkeep, destroy Psychic Allergy unless you sacrifice two Islands.
| Name | Mana | Type | Text |
|---|---|---|---|
| Krallenhorde Killer | Creature — Werewolf | {3}{G}: Krallenhorde Killer gets +4/+4 until end of turn. Activate only once each turn. At the beginning of each upkeep, if a player cast two or more spells last turn, transform Krallenhorde Killer. 2/2 | |
| Entropic Specter | 3BB | Creature — Specter Spirit | Flying As Entropic Specter enters the battlefield, choose an opponent. Entropic Specter's power and toughness are each equal to the number of cards in the chosen player's hand. Whenever Entropic Specter deals damage to a player, that player discards a card. */* |
| Fireball | XR | Sorcery | This spell costs {1} more to cast for each target beyond the first. Fireball deals X damage divided evenly, rounded down, among any number of targets. |
| Gutwrencher Oni | 3BB | Creature — Demon Spirit | Trample At the beginning of your upkeep, discard a card if you don't control an Ogre. 5/4 |
| Sphinx of Foresight | 2UU | Creature — Sphinx | You may reveal this card from your opening hand. If you do, scry 3 at the beginning of your first upkeep. Flying At the beginning of your upkeep, scry 1. 4/4 |
| Rust Elemental | 4 | Artifact Creature — Elemental | Flying At the beginning of your upkeep, sacrifice an artifact other than Rust Elemental. If you can't, tap Rust Elemental and you lose 4 life. 4/4 |
| Empty-Shrine Kannushi | W | Creature — Human Cleric | Empty-Shrine Kannushi has protection from the colors of permanents you control. 1/1 |
| Dreadwaters | 3U | Sorcery | Target player mills X cards, where X is the number of lands you control. |
| Necro-Impotence | BBB | Enchantment | Skip your untap step. At the beginning of your upkeep, you may pay X life. If you do, untap X permanents. Pay ½ life: Exile the top card of your library face down. Put that card into your hand at the beginning of the next end step. |
| Arctic Wolves | 3GG | Creature — Wolf | Cumulative upkeep {2} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) When Arctic Wolves enters the battlefield, draw a card. 4/5 |