Thymahl, Sorcerer Adept

Thymahl, Sorcerer Adept enters the
battlefield with 5 toughness counters on it.
Thymahl's toughness is equal to the amount of toughness counters on it.
{2}: Put two toughness counters on Thymahl.
Remove a toughness counter: target creature
gets +0/+2 until end of turn.