Sungold Sentinel

Graveyard hate that isn't a dead card when the graveyard is empty: that's the design problem this soldier resolves. Most incidental hate rides a creature that does nothing else, so it rots in your hand when the opponent has no juicy targets. Here the exile is a rider on entering and attacking, which means the aggressive white two-drop keeps hitting for its printed 3 whether or not there's anything to snipe. The exile is deliberately kept to one card at a time and only fires on those two windows, so it clocks a graveyard engine without ever fully shutting one off; it's harassment on a stick, not a Rest in Peace, and the timing gate lets an opponent rebuild between attacks. The Coven ability is the part that repays a wide board: pay to name a color and this creature becomes both hexproof from and unblockable by that color, turning a modest attacker into an evasive threat precisely when you already have the presence to make combat matter. Coven's board condition is a genuine constraint rather than a formality, since a swarm of same-sized bodies won't unlock it; you need a spread of power values before the evasion comes online. The result is maindeckable disruption that asks nothing of your deck's plan: it attacks like a normal creature, disrupts graveyards as a bonus, and rewards a developed board with evasion when the game gets grindy.