Dawnstrike Vanguard

The trigger reads as a reward for a battlefield state most go-wide white decks reach anyway. Anything that taps to attack, to crew, or to activate leaves two or more tapped creatures standing by your end step, and the payoff is a board-wide +1/+1 counter on everything except the Vanguard itself. That exclusion is the tell: this is not a card that wants to snowball its own stats, it wants a swarm of smaller bodies to grow past the range where sweepers and chump math bail an opponent out. Counters stick where pump spells fade, so each turn the effect resolves the whole team gets permanently harder to trade with, and the arithmetic tilts every future combat. The 4/5 lifelink body arrives at six mana, which keeps the reward honest: it does not swing a race by itself the first turn it hits the table, and it asks you to have already committed a board worth rewarding. Its home is the specific white idiom of the token or aggro deck that treats tapping out as a default posture rather than a risk, handing that deck a way to convert a stalled attack step into a lasting size advantage. This is a payoff that scales with how far ahead on bodies you already are, which is either its ceiling or its problem depending on how the game has gone by the time it arrives.