Fangs of Kalonia

Doubling counters is old green ground, but the sequencing folded into a single spell is what makes this one worth the slot. It puts a counter down first, then doubles, so the target does not need to have started the turn with anything: a bare creature leaves at two, a creature already carrying three or four walks away at eight or ten. The counter goes on and the doubling reads off it in one continuous resolution, unlike a passive doubler like Doubling Season that only rewards counters some other effect places. Overload rescales the same math to the whole team: every creature you control gains a counter, then every one that did doubles, a categorically different threat than a single-target pump. What is unusual is that it braids together two green traditions with different tempos: the surgical counter manipulation of the +1/+1 archetype, and the "one spell, whole board" ceiling overload was built to deliver. Most doublers are enchantments that sit in play accruing value; this compresses the entire payoff into a single instant of resolution. Being a sorcery is the price for that compression: no ambush math, no end-step surprise, just a main-phase choice between a cheap early swing on one creature and a delayed, lethal-scale finisher across the board. The overload cost is honestly steep, and that gap is what keeps the two modes from collapsing into the same card.