Slithermuse

Evoke is the whole point of this Elemental, and it exists to fire one trigger without paying for a body you do not want. The leaves-the-battlefield check measures an opponent's hand against yours and draws the difference, which makes the card's value float entirely on a number you do not control. The math is asymmetric in a way that defines its strategic posture: against a player sandbagging answers or refueling while you have emptied out, the gap can be enormous; against an empty-handed aggressor it draws nothing. The card punishes hoarding rather than rewarding it, and it rewards a read on the table before you commit. Both casting modes cost four, so evoke buys you nothing on rate; what it buys is the ability to convert the creature into a pure spell that sacrifices itself on entry, banking the draw immediately instead of leaving a 3/3 exposed. Cast for full price, you keep the body and collect the cards whenever it eventually dies, bounces, or gets sacrificed. That the trigger keys on "leaves the battlefield" rather than death is the wrinkle worth tracking: a blink or a bounce re-measures the hand gap and fires again, so the body invites recursion loops where each return re-runs the comparison, and removal at any speed cashes the trigger at that speed too. Two cards in one shell, sharing a payoff whose ceiling is set by an opponent's restraint.