best untap creature cards mtg way to a multiple times in Golgari? o:"untap target creature" or o:"untap

Relic of Progenitus has been one of the premium answers to some strategies: Its cheap, and can play a grindy game removing one card per turn, or one-shot-exiling both graveyards at the right time

#4 - Noble Hierarch Llanowar Elves might be the best green one-drop in Magic history

If this was limited to basics, then it would be a fine and solid group hug card

Add cards that help you produce more mana or the right colors of mana

Oh, you can also drop this to fizzle an aura or anything the Nadu, Winged Wisdom deck is trying to do

Commander's Sphere is also widely popular for similar reasons: You ramp and fix mana with this rock, and draw a card when needed (for 0 mana, even if tapped out!)