Mirror-Style Master

Backup is usually a way to hand a bonus to a creature standing next to the one that entered; here it doubles as self-setup. With no better home, the +1/+1 counter can land on this warrior's own 3/3 body, marking it as modified in time to swing. That single point of investment arms the attack trigger, which reads every attacking modified creature you control and mints a tapped-and-attacking token copy of it. The scope is tighter than the ceiling suggests, in two ways worth reading carefully. Only attacking modified creatures are copied, so the reward goes to a wide board committed to the alpha strike, not to blockers held back. And the copies are token copies that use the creatures' copiable values: they carry the originals' copiable characteristics but none of the counters, Equipment, or Auras that qualified the sources as modified in the first place. The doubling multiplies bodies and copiable values, never the stacked buffs on top of them. End-of-combat exile keeps the burst from becoming a standing army, which points the whole card at a lethal swing rather than a grind. Its real design interest is the collapse: the +1/+1 counters deck and the Voltron-style modification deck have historically chased different payoffs, and this warrior reads both through one attack trigger, since counters, Equipment, and Auras all count as modifications under the same clause.