Thrael, United Conscious

If a counter would be placed on a creature you control, put a counter of that type on every creature you control instead.
Creatures you control have first strike if a creature you control has first strike. The same is true for flying, deathtouch, double strike, haste, hexproof, indestructible, lifelink, menace, reach, skulk, trample, and vigilance.
All the world in one being.