Dominaria United: Llanowar Loamspeaker

Edition:	Dominaria United
Type:	Creature - Elf Druid
Cast:
Rarity:	R
Collector #:	170
Pow/Tuf:	1/3
: Add one mana of any color. : Target land you control becomes a 3/3 Elemental creature with haste until end of turn. It's still a land. Activate only as a sorcery.
Pro Tip! Mana dorks have evolved a bit since Llanowar Elves, haven't they? While not exactly filling the same role, this not only gives you an extra mana to work with, but it fixes your colors and has some extra utility.