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 |
|---|---|---|---|
| Forethought Amulet | 5 | Artifact | At the beginning of your upkeep, sacrifice Forethought Amulet unless you pay {3}. If an instant or sorcery source would deal 3 or more damage to you, it deals 2 damage to you instead. |
| Custody Battle | 1R | Enchantment — Aura | Enchant creature Enchanted creature has "At the beginning of your upkeep, target opponent gains control of this creature unless you sacrifice a land." |
| Nyxathid | 1BB | Creature — Elemental | As Nyxathid enters the battlefield, choose an opponent. Nyxathid gets -1/-1 for each card in the chosen player's hand. 7/7 |
| Akroan Horse | 4 | Artifact Creature — Horse | Defender When Akroan Horse enters the battlefield, an opponent gains control of it. At the beginning of your upkeep, each opponent creates a 1/1 white Soldier creature token. 0/4 |
| Capricious Efreet | 4RR | Creature — Efreet | At the beginning of your upkeep, choose target nonland permanent you control and up to two target nonland permanents you don't control. Destroy one of them at random. 6/4 |
| Armageddon Clock | 6 | Artifact | At the beginning of your upkeep, put a doom counter on Armageddon Clock. At the beginning of your draw step, Armageddon Clock deals damage equal to the number of doom counters on it to each player. {4}: Remove a doom counter from Armageddon Clock. Any player may activate this ability but only during any upkeep step. |
| Lone Wolf of the Natterknolls | Creature — Werewolf | Whenever an opponent casts a spell during your turn, draw two cards. At the beginning of each upkeep, if a player cast two or more spells last turn, transform Lone Wolf of the Natterknolls. 3/5 | |
| Master of Death | 1UB | Creature — Zombie Wizard | When Master of Death enters the battlefield, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) At the beginning of your upkeep, if Master of Death is in your graveyard, you may pay 1 life. If you do, return it to your hand. 3/1 |
| Wall of Tombstones | 1B | Creature — Wall | Defender (This creature can't attack.) At the beginning of your upkeep, change Wall of Tombstones's base toughness to 1 plus the number of creature cards in your graveyard. (This effect lasts indefinitely.) 0/1 |
| Double Take | 3UU | Instant | Choose another player. You draw two cards. At the beginning of the first upkeep in your next game with that player, you draw two cards. |