Battlesong Berserker
The trigger is the tell: this fires whenever you attack, not on entry, not once per game, so the pump is on offer every combat rather than being a one-shot spell you cast and forget. Most single-target combat buffs are instants that resolve and vanish from the equation; here the boost lives inside the attack step itself, and menace is the keyword that makes the extra power land. A defender who has stacked up a wall of blockers still has to commit two bodies to stop the chosen creature, so a single threat becomes a persistent tax on how the opponent can block: menace does not make the attacker unblockable, but it does make blocking it expensive. The +1/+0 is deliberately modest, and the toughness stays untouched, so the buff is pure aggression rather than a survival tool; the card is not built to be a finisher on its own but to reliably shove one attacker through a clogged board. That is also why it wants a wide board without being a go-wide payoff itself: it pumps exactly one creature per attack, so it prefers a team it can funnel into a single evasive spearhead over a swarm that dilutes the effect. Its best work comes against the gummed-up ground stalls that aggressive decks struggle to break, turning a repeatable menace grant into a way to pry those boards open.
