Divitar, Mother of Elves

Indestructible
As long as the amount of Elf Creatures on the battlefield is less then 4, Divitar isn't a creature.
At the beginning of your end step, put a
Modor Rose counter on target elf creature.
When this is a creature, give all Creatures with
an Modor Rose counter on it +3/+2
and Trample.