Sun Fire, the Kai Initiate

Level Up 3/2 (Whenever this creature attacks or
blocks, it randomly gains +1/+0 or +0/+1 after the
combat if it is still in play. The maximum power and toughness it can gain through this method is +3/+2)

"When they have finally learnt the secret skills of the
Kai, they will return to their homes equipped in mind
and body to defend themselves against the constant
threat of war from the Darklords of the west."
- Joe Dever