Paragon of the Hydra

Hydra Spells and Abilities cannot be countered.
Whenever a Hydra creature you control declares
an attack put X +1/+1 counters on the attacking creature where X is its power.
{u}{b}{r}{g}{t} All other Hydra creatures gain
+4/+4 Trample, Lifelink, Hexproof, and
First Strike until the end of the turn.