Salazar's Realm of Magic

When Salazar’s Realm of Magic enters the battlefield, You may play one creature,
and one enchantment without its Mana cost.
All creatures you control get +2/+2, or
+4/+0, or +0/+4
{t}: Add 2 mana of any color to your mana
pool
I will make sure the magic of the creatures and wildlife in this realm stays fresh, as the world of death fills the stale air.
--Salazar, god of life