Olthos, The Eagle King

Flying, Vigilance, Lifelink
Ritual — Whenever an artifact enters the battlefield, put X +1/+1 counters on target
creature, where X is this creature's power.
Olthos gets +3/+3 for every eagle you control.
{x}{w}{t}: Search your library for an artifact with converted mana cost X or less and put it in your
hand, or create X X/X white Eagle tokens with
flying.