Krovikan Elementalist

A black creature whose two abilities both cost colors it does not have, which is the whole point. Ice Age put out a small cycle of these off-color activators to reward the multicolor decks the set was trying to encourage: the body sits in black, but the elementalist does nothing until you can pay red and blue alongside it. The red activation is a pump effect; the blue one is the interesting half, granting flying to a creature you control at the cost of sacrificing it during the next end step. That sacrifice clause is the design valve. It turns a flying-evasion trick into a do-or-die proposition: you commit a creature to the air to push damage or dodge a blocker, and the board pays for it whether the attack connects or not. The flight is meant to be spent, not kept, which is a sharper decision than most evasion grants of its era demanded. None of this changes the fact that the abilities never touch black mana, so the card is really a payoff for a three-color shell that happens to wear a black two-drop body. As an early attempt to make multicolor mana costs feel rewarding rather than punishing, it is a curiosity more than a workhorse, but the sacrifice-flight line is a cleaner bit of design than the 1/1 frame suggests.