| Rarity: | U |
| #: | 22 |
| Creature Type or Sub Type: | Enchantment |
| Rules Text Contains: | Whenever one of your opponents successfully casts a creature spell, if Opal Acrolith is an enchantment, Opal Acrolith becomes a 2/4 creature that counts as a Guardian.
0: Opal Acrolith becomes an enchantment. |
| Set: | Urza's Saga |
| Number: | 22 |
