Power Surge (168) [Limited Edition Beta] Core Set 2019 (They deal damage to creatures

(They deal damage to creatures in the form of -1/-1 counters

any time you could activate a mana ability

Exile Gonti's Aether Heart: Take an extra turn after this one

Set: Foreign Black Border Type: Enchantment Rarity: rare Cost: {3}{G} All Forests are 1/1 creatures that are still lands

Set: Core Set 2020 Promos Type: Legendary Creature — Elemental Rarity: mythic Cost: {1}{G}{U}{R} When Omnath enters

Power Surge (168) [Limited Edition Beta] Core Set 2019 (They deal damage to creaturesSet: Limited Edition Beta Type: Enchantment Rarity: rare Cost: {R}{R} At the beginning of each player's upkeep, this enchantment deals X damage to that player, where X is the number of untapped lands they controlled at the beginning of this turn.