Heartwood Crafter // Soul Tether

{G} // {2}{R/G} · Creature — Elf Artificer // Sorcery · from $0.29

Heartwood Crafter: This creature enters prepared. (While it's prepared, you may cast a copy of its spell. Doing so unprepares it.)

{T}: Add {C}. This mana can't be spent to cast spells from your hand.

Soul Tether: Create a Heartwood token. (It's a red and green artifact with "{T}: Add {R} or {G}.")

Format legality

Golgari Midrange (Standard, 1.4% of the meta): 4 in the main deck of 4% of lists
Gruul Aggro (Standard, 0.3% of the meta): 4 in the main deck of 17% of lists