Erratic Explosion

Damage that scales with whatever your library coughs up first is a gamble most decks would never accept, which is exactly why this one came wrapped in a deckbuilding contract: arrange your nonland count so the first hit is reliably enormous, and the variance collapses into a number you can plan around. The structural pivot is the clause that keeps revealing until it finds a nonland, which means every land in the deck is skipped before the damage is set. The build that fires this consistently runs a library that is mostly lands with a tiny core of giant spells, or leans on draw manipulation to guarantee the reveal; a deck packed with cheap nonland cards does the opposite, burying the payoff under a pile of two- and three-drops. Pair it with the bloated mana values of Eldrazi titans or a Worldspine Wurm and a single cast can erase a player at a cost that has nothing to do with the damage dealt. The "Choose any target" wording is broader than burn usually allows, letting the sum land on a creature, a planeswalker, or a face as the math dictates. And because the revealed cards return to the bottom rather than being spent, the deck loses nothing it needs to keep. This is less a removal spell than the trigger on a custom-built cannon: inert without the right ammunition, lethal once the library is loaded to fire.