Weaver of Lightning

Four toughness with reach is the frame for a machine that never attacks: a wall built to outlast the swings it provokes while a quieter engine ticks away underneath. The toughness invites attacks it cannot punish in combat, then punishes them anyway, one point at a time, every time you cast an instant or sorcery. The damage is mandatory and pointed at a creature an opponent controls, which makes it both a finisher for one-toughness fliers and dorks and a slow grinder against anything that lingers on the board. That instant-and-sorcery clause is the entire constraint: a deck thin on cheap spells gets a serviceable defensive body and nothing more, while one packed with cantrips and burn converts each cast into a free point of damage on top of whatever the spell already did. The dependence on a spell-dense shell is what holds the rate in check. The defensive statline is load-bearing too, because a creature meant to sit back and accumulate value has to survive the ground and air pressure it baits, and four toughness with reach covers both without ever leaving home. It hands a spell-heavy deck a board-control sub-engine for almost no deckbuilding cost, asking only that the spells keep coming and accepting that no single trigger ends anything: the work happens across a dozen casts, not one.