M:tG card similarity search
1 · Artifact
At the beginning of your upkeep, you gain X life, where X is the number of cards in your hand minus 4.
| Name | Mana | Type | Text |
|---|---|---|---|
| Robobrain War Mind | 3U | Artifact Creature — Robot | Robobrain War Mind's power is equal to the number of cards in your hand. When Robobrain War Mind enters the battlefield, you get an amount of {E} (energy counters) equal to the number of artifact creatures you control. Whenever Robobrain War Mind attacks, you may pay {E}{E}{E}. If you do, draw a card. */5 |
| Cosmic Larva | 1RR | Creature — Beast | Trample At the beginning of your upkeep, sacrifice Cosmic Larva unless you sacrifice two lands. 7/6 |
| Mindwrack Demon | 2BB | Creature — Demon | Flying, trample When Mindwrack Demon enters the battlefield, mill four cards. Delirium — At the beginning of your upkeep, you lose 4 life unless there are four or more card types among cards in your graveyard. 4/5 |
| Chthonian Nightmare | 1B | Enchantment | When Chthonian Nightmare enters the battlefield, you get {E}{E}{E} (three energy counters). Pay X {E}, Sacrifice a creature, Return Chthonian Nightmare to its owner's hand: Return target creature card with mana value X from your graveyard to the battlefield. Activate only as a sorcery. |
| Corrosion | 1BR | Enchantment | Cumulative upkeep {1} (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.) At the beginning of your upkeep, put a rust counter on each artifact target opponent controls. Then destroy each artifact with mana value less than or equal to the number of rust counters on it. Artifacts destroyed this way can't be regenerated. When Corrosion leaves the battlefield, remove all rust counters from all permanents. |
| Leyline of Punishment | 2RR | Enchantment | If Leyline of Punishment is in your opening hand, you may begin the game with it on the battlefield. Players can't gain life. Damage can't be prevented. |
| Leyline of Vitality | 2GG | Enchantment | If Leyline of Vitality is in your opening hand, you may begin the game with it on the battlefield. Creatures you control get +0/+1. Whenever a creature enters the battlefield under your control, you may gain 1 life. |
| March of Swirling Mist | XU | Instant | As an additional cost to cast this spell, you may exile any number of blue cards from your hand. This spell costs {2} less to cast for each card exiled this way. Up to X target creatures phase out. (While they're phased out, they're treated as though they don't exist. Each one phases in before its controller untaps during their next untap step.) |
| Teferi Akosa of Zhalfir | Legendary Planeswalker — Teferi | [+1]: Draw two cards. Then discard two cards unless you discard a creature card. [−2]: You get an emblem with "Knights you control get +1/+0 and have ward {1}." [−3]: Tap any number of untapped creatures you control. When you do, shuffle target nonland permanent an opponent controls with mana value X or less into its owner's library, where X is the number of creatures tapped this way. Loyalty 4 | |
| Prototype Portal | 4 | Artifact | Imprint — When Prototype Portal enters the battlefield, you may exile an artifact card from your hand. {X}, {T}: Create a token that's a copy of the exiled card. X is the mana value of that card. |