Trample Savage Firecat enters the battlefield with seven +1/+1 counters on it. Whenever you tap a land for mana, remove a +1/+1 counter from Savage Firecat.
Shower of Coals deals 2 damage to each of up to three targets. Threshold — Shower of Coals deals 4 damage to each of those permanents and/or players instead if seven or more cards are in your graveyard.
Enchant land When enchanted land becomes tapped, destroy it and Steam Vines deals 1 damage to that land's controller. That player attaches Steam Vines to a land of their choice.
At the beginning of your upkeep, you may put a +1/+1 counter on Chlorophant. Threshold — As long as seven or more cards are in your graveyard, Chlorophant has "At the beginning of your upkeep, you may put another +1/+1 counter on Chlorophant."
{G}, Discard a card: Crashing Centaur gains trample until end of turn. Threshold — As long as seven or more cards are in your graveyard, Crashing Centaur gets +2/+2 and has shroud.
{1}{G}, Sacrifice Diligent Farmhand: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. If Diligent Farmhand is in a graveyard, effects from spells named Muscle Burst count it as a card named Muscle Burst.