Nesting Dovehawk

Mana Cost: {3}{W}
Total Cost: 4
Type: Creature — Bird
Description: Flying
At the beginning of combat on your turn, populate. (Create a token that’s a copy of a creature token you control.)
Whenever a creature token you control enters, put a +1/+1 counter on this creature.
Power: 2
Toughness: 2
Colors: W