Mountain Yeti

A hoser dressed as a beater. The design logic here is the stacked conditional: mountainwalk and protection from white are both meant to punish a specific opponent, and the card assumes you have correctly read the table before you cast it. Against the wrong deck, you have paid four mana for a vanilla 3/3, a rate that was poor even in 1994. Against the right deck (mono-white, or a deck splashing red for Mountains it has no business running), the same 3/3 walks past every blocker untouched and shrugs off white's removal, combat tricks, and Auras alike: protection from white means it can't be targeted, damaged, blocked, or enchanted by anything white. That extreme variance is the Legends design sensibility in miniature: the set is full of cards whose floor is unplayable and whose ceiling is a one-sided lock, with no interest in smoothing the curve between the two. Modern design has largely abandoned this shape, preferring hosers that maindeck reasonably (a cheap body with protection from a color, say) over four-mana cards that read as blanks against half the field. Mountain Yeti is the older philosophy stated cleanly: the card is a wrench, not a tool, and you bring it only when you know exactly which bolt you are turning.