Archetype of Imagination

Creatures you control have flying.
Creatures your opponents control lose flying and can't have or gain flying.

Flowering of the White Tree

Legendary creatures you control get +2/+1 and have ward {1}.
Nonlegendary creatures you control get +1/+1.

Attacking creatures you control have double strike.

Whenever a creature you control enters, this enchantment deals 1 damage to each opponent.

Choose a creature type. Return all creatures that aren't of the chosen type to their owners' hands.