Card Codex

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17 May 2024: Card library updated.

Keeper of Keys

3UU · Creature — Human Rogue Mutant

When Keeper of Keys enters the battlefield, you become the monarch. At the beginning of your upkeep, if you're the monarch, creatures you control can't be blocked this turn. 4/4

Similar cards

Color identity:
NameManaTypeText
Fatal Blow BInstant Destroy target creature that was dealt damage this turn. It can't be regenerated.
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Melira's Keepers 4GCreature — Human Warrior Melira's Keepers can't have counters put on it. 4/4
Novice Inspector WCreature — Human Detective When Novice Inspector enters the battlefield, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.") 1/2
Bone Shaman 2RRCreature — Giant Shaman {B}: Until end of turn, Bone Shaman gains "Creatures dealt damage by Bone Shaman this turn can't be regenerated this turn." 3/3
Obsessive Astronomer 1RCreature — Human Wizard If it's neither day nor night, it becomes day as Obsessive Astronomer enters the battlefield. Whenever day becomes night or night becomes day, discard up to two cards, then draw that many cards. 2/2
Staff of the Ages 3Artifact Creatures with landwalk abilities can be blocked as though they didn't have those abilities.
Elemental Uprising 1GInstant Target land you control becomes a 4/4 Elemental creature with haste until end of turn. It's still a land. It must be blocked this turn if able.
Corrosion 1BREnchantment 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.
Myr Prototype 5Artifact Creature — Myr At the beginning of your upkeep, put a +1/+1 counter on Myr Prototype. Myr Prototype can't attack or block unless you pay {1} for each +1/+1 counter on it. 2/2
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