Pygmy Hippo

Creature — Hippo

Whenever this creature attacks and isn't blocked, you may have defending player activate a mana ability of each land they control and lose all unspent mana. If you do, this creature assigns no combat damage this turn and at the beginning of your next main phase this turn, you add an amount of equal to the amount of mana that player lost this way.

Power / Toughness: 2 / 2

Pygmy Hippo is on the reserved list, which means WOTC has self-imposed restrictions from making functional reprints of this card.