Seismic Assault

The card that turned lands into ammunition. Discarding a land for two damage looks like a poor trade until you stop treating lands as a resource you spend on mana and start treating them as a deck full of small bolts that happen to make mana when you draw them early. The triple-red cost is the commitment that pays for the rate: this is not a splash, it is a manabase built to be burned, and the card has always run alongside effects that put lands back into hand or fill it past the discard limit. Pair it with a way to draw or recur lands and the activation stops being a cost at all; it becomes a loop, and the two-damage clause aims at any target, so the loop ends games whether the opponent has a board or just a life total. The activation has no tap symbol, no mana cost, and no speed restriction, meaning a stocked hand of lands becomes an instant-speed firing line that answers a swarm and closes the game in the same window. Each activation is a Shock, in effect, except the Shock is your entire deck and the limiting reagent is how fast you can refill.