Udyr, the Spirit Walker

Endure 1
Whenever you cast a creature spell, if that spell
was white, Udyr, the Spirit Walker gets +0/+2
and lifelink until end of turn; If that spell was
blue, it gains flying and hexproof until end of
turn; If that spell was red, it gets +1/+0 and
double strike until end of turn; And if that spell
was green, it gets a +1/+1 counter and trample
until end of turn.