Duergar Mine-Captain

Most lords sit back and let the team do the work; this one inverts that, because untapping is the cost of its pump. The clean line sends the Mine-Captain in with the rest of the board, lets the attack tap it, then pays to untap it and hands the entire attacking squad +1/+0 in the same combat. It swings and pumps in one motion rather than holding back to power up the others. The catch is the rate: each pump costs an untap, and the payoff scales with width, so a board crowded with small bodies turns a marginal 2/1 into a damage multiplier that outpaces its own stat line, while the fragile body is the bill for that ceiling. The card belongs to the small family of designs that treat untapping as a spendable resource, where a creature's readiness becomes currency for its ability instead of a defensive perk; here the creature spends that currency mid-combat without ever stepping out of the attack. The flexible pips, in both the cost and the activation, mean it slots into a red aggro shell or a white weenie shell without asking which color the deck has committed to, a design built to find a home on either side of the boundary it straddles.