Fulminator Mage

Stone Rain stapled to a body never quite stuck around; this version did, and the reason is the hybrid casting cost that lets either color's manabase pay for it without contortion. The difference from a one-shot land destruction spell is the part that matters: this stays on the battlefield as a 2/2 threatening to detonate the moment a fragile nonbasic resolves, which warps how the opponent sequences their fixing around it. The targeting clause is the constraint that keeps it from being oppressive: it cannot touch a basic, so it punishes greedy multicolor manabases, manlands, and the utility lands of higher-end strategies while leaving a disciplined mono-color opponent untouched. The sacrifice ability is what makes the body so resilient as a threat. Because the destruction is an activated ability with sacrifice as its cost, an opponent who points removal at the 2/2 cannot deny the land kill: the controller simply activates in response, trading the creature they were going to lose anyway for the nonbasic. The ability can also fire the instant it resolves, before the opponent regains priority. That asymmetry, plus recursion that returns it to hand to repeat the denial, makes it a clock and a tax in the same slot, with the modest body just enough to start attacking when the land it wants to kill never shows up.