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17 May 2024: Card library updated.

Opal Guardian

WWW · Enchantment

When an opponent casts a creature spell, if Opal Guardian is an enchantment, Opal Guardian becomes a 3/4 Gargoyle creature with flying and protection from red.

Similar cards

Color identity:
NameManaTypeText
Skyline Savior 1WWCreature — Angel Flying When Skyline Savior enters the battlefield, return a permanent you control to its owner's hand. If it's a non-Angel creature card, it perpetually gets +1/+1, gains flying, and becomes an Angel in addition to its other types. 3/4
Sigarda's Aid WEnchantment You may cast Aura and Equipment spells as though they had flash. Whenever an Equipment enters the battlefield under your control, you may attach it to target creature you control.
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Monastery Siege 2UEnchantment As Monastery Siege enters the battlefield, choose Khans or Dragons. • Khans — At the beginning of your draw step, draw an additional card, then discard a card. • Dragons — Spells your opponents cast that target you or a permanent you control cost {2} more to cast.
Nettle Drone 2RCreature — Eldrazi Drone Devoid (This card has no color.) {T}: Nettle Drone deals 1 damage to each opponent. Whenever you cast a colorless spell, untap Nettle Drone. 3/1
Timber Shredder Creature — Werewolf Trample At the beginning of each upkeep, if a player cast two or more spells last turn, transform Timber Shredder. 4/2
Fowl Play 2UEnchantment — Aura Enchant creature Enchanted creature loses all abilities and is a Bird creature with base power and toughness 1/1.
Goblin Assault 2REnchantment At the beginning of your upkeep, create a 1/1 red Goblin creature token with haste. Goblin creatures attack each combat if able.
Belligerent Regisaur Creature — Dinosaur Trample Whenever you cast a spell, Belligerent Regisaur gains indestructible until end of turn. 4/3
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