Viridian Shaman [Commander 2015] Condition:Heavily Played You gain 1 life for

You gain 1 life for each S spent to cast this spell

so to be safe

III — Exile cards from the top of your library until you exile a legendary card

Set: Modern Horizons 3 Type: Creature — Human Wizard Rarity: Uncommon Cost: {1}{W} Whenever another creature enters the battlefield under your control

You may have Malleable Impostor enter the battlefield as a copy of a creature an opponent controls

Viridian Shaman [Commander 2015] Condition:Heavily Played You gain 1 life forSet: Commander 2015 Type: Creature Elf Shaman Rarity: Uncommon Cost: {2}{G} When Viridian Shaman enters the battlefield, destroy target artifact. She stands as a living symbol of the natural world and an enemy of the forces that threaten it.