Opal Guardian

Enchantment

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

It was a moment in time, cast in stone—a moment whose time had come again.

Christopher Rush

Legalities

NOT LEGALStandard
NOT LEGALPioneer
LEGALModern
LEGALLegacy
LEGALVintage
LEGALCommander
LEGALOathbreaker
NOT LEGALAlchemy
NOT LEGALHistoric
NOT LEGALBrawl
NOT LEGALTimeless
NOT LEGALPauper
LEGALPenny