A-Hagra Constrictor

Menace is usually a keyword you hand to one creature at a time; this printing converts it into a board-wide payoff for a counters strategy. The two counters it arrives with mean it satisfies its own condition unassisted, but the anthem clause is the real hook: every creature you control with a +1/+1 counter on it becomes something two blockers have to gang up on. In a deck built around proliferate and counter distribution, that reframes what counters are for. A +1/+1 counter normally reads as a stat bump; here the same resource that grows your board also grants evasion, so bigger and harder-to-block become the same investment. The effect rewards going wide with small counter-bearers rather than piling counters onto a single threat, since menace scales with how many of your creatures wear a counter, not with the size of any one of them. The catch is that the ability exists only while this snake lives; remove it and the whole board reverts to blockable, making it the first thing an opponent wants gone once it starts pushing damage through. That fragility is what keeps a two-mana enabler capable of turning a stalled counters board into a lethal alpha strike from being oppressive.