Glimpse of Nature

Whenever you cast a creature spell this turn, draw a card.

Animar, Soul of Elements

Protection from white and from black
Whenever you cast a creature spell, put a +1/+1 counter on Animar, Soul of Elements.
Creature spells you cast cost {1} less to cast for each +1/+1 counter on Animar.

Progenitor Mimic

You may have Progenitor Mimic enter as a copy of any creature on the battlefield, except it has "At the beginning of your upkeep, if this creature isn't a token, create a token that's a copy of this creature."

Shrieking Drake

Flying
When Shrieking Drake enters, return a creature you control to its owner's hand.

Time Warp

Target player takes an extra turn after this one.

Archaeomancer

When Archaeomancer enters, return target instant or sorcery card from your graveyard to your hand.

Aluren

Any player may cast creature spells with mana value 3 or less without paying their mana costs and as though they had flash.