Electryte

The whole engine hinges on a single ordering quirk: the trigger fires only when this creature deals combat damage to the defending player, which means it must connect unblocked before it sweeps anything. That restriction is what keeps a 3/3 from being a free board wipe. Read the trigger carefully, though, because the sweep is not pointed at this creature's own blockers (it has none if it got through). It hits each blocking creature on the battlefield: every defender currently committed to stopping the rest of your attacking team. This trilobite wants to swing alongside a board. Send a wide attack, let the opponent assign blockers to your other threats, slip it through the open lane, and the trigger fans its power out across the entire defensive line. The timing matters precisely because it limits the payoff: combat damage is dealt simultaneously, and this ability only triggers afterward, so killing those blockers happens too late to retroactively push your other attackers' damage through. What you get is a board-wide removal effect bolted onto a connecting creature, not a chain reaction that opens the floodgates. The puzzle it poses is therefore an alpha-strike puzzle: the opponent has to decide whether they can afford to block your other attackers at all while leaving a path for this one, because committing blockers is exactly what loads the targets the sweep will erase. It never needs to be unblockable to be devastating; it needs your opponent to block everything else.