Card Codex

M:tG card similarity search

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
Predatory Advantage 3RGEnchantment At the beginning of each opponent's end step, if that player didn't cast a creature spell this turn, create a 2/2 green Lizard creature token.
Pygmy Troll 1GCreature — Troll Whenever Pygmy Troll becomes blocked by a creature, Pygmy Troll gets +1/+1 until end of turn. {G}: Regenerate Pygmy Troll. 1/1
Dragonsoul Knight 2RCreature — Human Knight First strike {W}{U}{B}{R}{G}: Until end of turn, Dragonsoul Knight becomes a Dragon, gets +5/+3, and gains flying and trample. 2/2
Mammoth Harness 3GEnchantment — Aura Enchant creature Enchanted creature loses flying. Whenever enchanted creature blocks or becomes blocked by a creature, the other creature gains first strike until end of turn.
Alley Grifters 1BBCreature — Human Mercenary Whenever Alley Grifters becomes blocked, defending player discards a card. 2/2
Keeper of the Secret Lair 1ULegendary Creature — Merfolk Rogue Flash You may cast Secret Lair spells as though they had flash. Secret Lair spells you cast cost {1} less to cast. 2/1
Genju of the Fens BEnchantment — Aura Enchant Swamp {2}: Until end of turn, enchanted Swamp becomes a 2/2 black Spirit creature with "{B}: This creature gets +1/+1 until end of turn." It's still a land. When enchanted Swamp is put into a graveyard, you may return Genju of the Fens from your graveyard to your hand.
Wall of Resurgence 2WCreature — Wall Defender When Wall of Resurgence enters the battlefield, you may put three +1/+1 counters on target land you control. If you do, that land becomes a 0/0 Elemental creature with haste that's still a land. 0/6
Stoic Sphinx 2UUCreature — Sphinx Flash Flying Stoic Sphinx has hexproof as long as you haven't cast a spell this turn. 5/3
Queen Marchesa 1RWBLegendary Creature — Human Assassin Deathtouch, haste When Queen Marchesa enters the battlefield, you become the monarch. At the beginning of your upkeep, if an opponent is the monarch, create a 1/1 black Assassin creature token with deathtouch and haste. 3/3
Page 65