Venomous Manticore

Deathtouch, Flying
When Venomous Manticore enters the battlefield,
destroy target creature.
Venomous Manticore loses Deaththouch when
blocking or blocked by a Dragon.
"They grow strong eating Griffons, Primocs,
Pegasi, and Drakes. They fear only the Dragons,
for their fire and immunity to venom."