Dwarven Driller
Land destruction that hands the choice to the victim is a rare design wrinkle, and this Dwarf is one of the cleaner expressions of it. Stone Rain blows up a land flatly; this creature instead lets the controller keep their land by eating 2 damage off the top. That looks like a downgrade, but it changes what the card is for. Repeatable land destruction is dangerous to print at any rate, so the damage clause does double duty: it caps the activation as a soft Shock the opponent can always pay, and it turns a tap ability that would otherwise lock a player out of the game into a slow grind they have agency over. The 2/2 body matters too, because the threat is the tap, not the attack: leave it untapped and the opponent budgets life or land every turn it stays alive. Against decks light on lands or hungry for life, the "destroy" half lands; against anyone willing to bleed, it becomes a clock that also pressures fixing. It never warped a format, but as a study in how to make recurring land destruction printable, the either-or structure is the entire idea. Wizards has returned to "destroy unless you pay life or damage" templating since, and Dwarven Driller is one of the early, blunt versions: a creature whose whole job is to make every land the opponent keeps cost them something.
