Sphere of Grace

A hoser built to the most literal specification: it answers black specifically, prevents a fixed two points, and contributes nothing for the four mana it costs unless your opponent is the right color. That narrowness is the whole bargain. Crucially, the prevention only covers damage dealt to you, not your creatures, so it does nothing against targeted removal; what it taxes is the player-facing drain and damage that black leans on, the Drain Life and Corrupt school of life-loss that closes games by chipping at your total. A two-point cap turns the cheapest of those effects into a wasted card while leaving the bigger drains only dented. What dates it is the design philosophy more than the rate: this comes from an era when color-pie hosers were printed as enchantments you committed to a board slot and left running, paying full mana for a passive wall. The same prevention effect was split across the enemy colors, each version shielding against a different damage source. That two-damage cap reads as conservative now, because later prevention learned either to stop all of a source's damage or to ride on a body that also pressures the opponent. This asks for neither: it sits on the battlefield, blunts one color's reach for your life total by two, and bets that two is enough.