Karplusan Giant

Snow-covered lands were Ice Age's signature texture, a parallel land supertype meant to seed cards that paid you for tapping them, and this Giant is the experiment at its most timid: a 3/3 for seven whose only trick is leaning on those specific lands to grow. The one genuinely interesting wrinkle is that the activation costs no mana. In the late game, every untapped snow land becomes a point of power you can dump onto the body at instant speed, turning a stalled board into a surprise lethal swing or a combat trick that outlives a removal-trade. The catch is the snow requirement itself. You are not tapping lands for the ability; you are tapping a scarce supertype, and the more you pump, the less mana you have left to back the body up. Wizards eventually got snow right when Coldsnap and later Modern Horizons rebuilt the type as a deckbuilding resource rather than a tax, but this is the early prototype: a creature whose ceiling is entirely hostage to how committed your manabase is to a land type the rest of your deck barely wants.