Frontier Warmonger

Menace is usually a keyword a creature carries for itself, evasion stapled to one body. Here it detaches from any single attacker and becomes a combat trigger: whenever creatures attack one of your opponents or a planeswalker they control, the whole attacking pack gains menace until end of turn. That reshapes the math of a chump-block defense. An opponent who could survive a swarm by trading one blocker per attacker now has to double up on every threat or eat the damage, and against a truly wide board they simply run out of bodies. Read the trigger closely, though: it fires on creatures attacking an opponent, not just yours, so in a multiplayer game it also arms an opponent's attack aimed at someone else. Menace granted to a rival's swing at the player to their left is not a bug you can wish away; it is the price of an ability written to care about the target of an attack rather than its controller. What the condition does buy you is a hard commitment to the race. The trigger offers nothing to a defensive stall (blocking creatures never qualify) and everything to pressure. Its own 4/4 counts among "those creatures" when it swings with the team, so it is never a passive anthem sitting behind the line: it hands itself menace and joins the alpha strike.