
({U/R} can be paid with either {U} or {R}.)
When this creature becomes the target of a spell or ability, return this creature to its owner's hand.
Petrahydrox has 2 printings, first in Guildpact (2006). EDHREC ranks it #31,009 among Commander cards. It has 3 official rulings.
Cards that show up in the same decks on EDHREC.