"Study the great spirits of our age and those of the past. Prune secrets from the branching traceries of our lineage."
—Twila, Gilt-Leaf archdruid

Heritage Druid

Tap three untapped Elves you control: Add {G}{G}{G}.

Secret Lair 30th Anniversary Countdown Kit

Eternal Masters

Tap three untapped Elves you control: Add {G}{G}{G} to your mana pool.

Morningtide

Since Heritage Druid’s activated ability doesn’t have a tap symbol in its cost, you can tap creatures that haven’t been under your control since your most recent turn began (including Heritage Druid itself) to pay the cost.