Heartstabber Mosquito

Kicker is the mechanic that lets one card answer two different points on the curve, and this is that logic bent squarely toward black removal. Cast cheap, the card is a four-mana flyer: a body to deploy when you are short on lands or just need something in the air right now, with no kill target worth the premium. Cast with the kicker paid, it lands the same flyer and destroys a creature on entry, unconditionally, the mana sink you reach for when you are flooded and the bare flyer would otherwise sit dead in hand. The structure is the appeal: a single slot that scales with available mana rather than committing you to one role at deckbuilding time. The cost of that flexibility is steep and deliberate. The full kicked rate runs seven mana for an effect that, split across two separate cards, would come far cheaper, and the destroy trigger fires only on entry, so there is no holding the removal in reserve for the moment it matters. It is a creature first and a kill spell second, which is exactly the trade kicker is built to make: you pay a premium for never having drawn the wrong half. The flexibility is real and it is paid for in raw efficiency. A deck leaning on cards shaped like this one trades tempo for the comfort of never holding a dead card.