Flying

This creature can't be blocked except by Walls and/or creatures with flying.

Whenever this creature blocks or becomes blocked by a green or white creature, destroy that creature at end of combat.

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever a creature dealt damage by this creature this turn dies, put a +1/+1 counter on this creature.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)

Flying
Vigilance (Attacking doesn't cause this creature to tap.)

Whenever this creature blocks or becomes blocked by a non-Wall creature, destroy that creature at end of combat.

As this creature enters, choose a number between 0 and 7.
At the beginning of your upkeep, you may choose a number between 0 and 7.
Shapeshifter's power is equal to the last chosen number and its toughness is equal to 7 minus that number.

Destroy target permanent.

: Regenerate this creature.