Inspiring Roar

The mass pump that buys permanence instead of duration. A static anthem holds its boost only while the enchantment survives; disenchant it and every creature shrinks at once. This prints a +1/+1 counter onto each creature you control and leaves no permanent to answer, so the growth is locked in the moment it resolves. The counters live on the bodies themselves, which is why a deck already invested in counters treats this as a top-up rather than a fresh stat line to defend. The cost of that durability is everything an anthem gives you in exchange: this is a one-shot that touches only the creatures present when it resolves, so the next threat you play arrives at its base size while a standing anthem would have caught it too. It also wants a board that is already wide, since a single creature gets one counter for four mana at sorcery speed. That places it at the conservative end of the one-shot team-pump lineage that runs back through Overrun, where those spells bolt on trample or evasion to convert a board into lethal that turn. This keeps the effect plain and unremovable, trading reach and finishing power for a buff no enchantment-removal spell can claw back. The permanence is the entire argument for it over something cheaper that fades the moment it leaves play.