First printed in Guildpact (2006)
Creature — Weird
( can be paid with either
or
.)
When this creature becomes the target of a spell or ability, return this creature to its owner's hand.
It departs through the streets' fissures with a sound like gravel pouring into a pond.
3/3
- Illustrated by
- Anthony S. Waters
- Watermark
- Izzet
Legality
- Legal in
- Modern, Legacy, Vintage, Pauper, Penny Dreadful, Commander, Duel Commander, Pauper Commander, PreDH, Oathbreaker
- Not legal in
- Standard, Pioneer, Future Standard, Historic, Timeless, Alchemy, Premodern, Old School 93/94, Gladiator, Tiny Leaders, Brawl, Standard Brawl, Competitive Brawl
Rulings (3)
- Petrahydrox's ability triggers only if it's on the battlefield when it becomes the target of a spell or ability.
- Petrahydrox's ability resolves before the spell or ability that caused it to trigger. It resolves even if that spell or ability is countered.
- If the spell or ability that targets Petrahydrox has no other targets, it won't resolve (because it no longer has a legal target after Petrahydrox has returned to its owner's hand).
Prices
Paper price: €0.03 / $0.06 , the cheapest non-foil print (Cardmarket and TCGplayer through MTGJSON, 5 Nov 2026).
MTGO price: 0.002 TIX, the cheapest non-foil print (average sell price on GoatBots, 4 Nov 2026).