Cavalier of Flame
{2}{R}{R}{R}Creature — Elemental Knight
{1}{R}: Creatures you control get +1/+0 and gain haste until end of turn. When this creature enters, discard any number of cards, then draw that many cards. When this creature dies, it deals X damage to each opponent and each planeswalker they control, where X is the number of land cards in your graveyard.