Journey into Nyx (jou)
#149 • uncommon • English • Foil
#149 • uncommon • English • Foil
Fleetfeather Cockatrice 

3
Creature — Cockatrice
Flash (You may cast this spell any time you could cast an instant.)
Flying, deathtouch

: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.)
Flying, deathtouch
5
Illustrated by Matt Stewart
Links
Legalities
Not Legal
Not Legal
Legal
pioneerLegal
ModernLegal
LegacyNot Legal
Legal
vintageLegal
CommanderNot Legal
Not Legal
Rulings
Once a creature becomes monstrous, it can't become monstrous again. If the creature is already monstrous when the monstrosity ability resolves, nothing happens.
2014-04-26 • wotc
Monstrous isn't an ability that a creature has. It's just something true about that creature. If the creature stops being a creature or loses its abilities, it will continue to be monstrous.
2014-04-26 • wotc
An ability that triggers when a creature becomes monstrous won't trigger if that creature isn't on the battlefield when its monstrosity ability resolves.
2014-04-26 • wotc