Viper, Cruel Conspirator

Both abilities point the same narrow way: the target has to be attacking alone. That single word inverts the token-flood plan black usually favors and turns this into a lord for the solo swing, a payload for the exact opposite of going wide. Every activation poses the same question to the board: is one creature carrying the whole attack, and how much do you want to sink into it this turn? The pump is trivial. The keyword grant carries the real weight, and it carries it at the moment blocks are already declared. Deathtouch makes the lone attacker something no blocker wants to trade with; lifelink converts an unblocked swing into a life swing; choosing between them after the defender has committed makes this a combat-manipulation piece rather than a static buff. Both cost one black apiece, so a mana-rich turn can layer several activations onto a single evasive creature and turn a slow start into a real clock. The lineage it sits in is the Voltron enabler: cards built to make one creature disproportionately dangerous instead of filling the battlefield. Where most of that lineage lives on the creature being pumped, this one works from a separate two-mana body at instant speed, holding mana back to shape the attack step after the opponent has already chosen how to block.