Olgblagoth, Lord of Chaos

Menace, haste
Whenever Olgblagoth, Lord of Chaos deals
combat damage to a player you get an experience counter.
At the beginning of your upkeep if you have 10
or more experience counters, Olgblagoth, Lord
of Chaos get's +X/+X and gains flying until end
of turn, where X is equal to the number of experience counters you have.