Aeternus, the Awakener

Landfall — Whenever a land enters under your control you may draw a card and lose 2 life. If this is the fourth time this ability has resolved this turn, lands you control become 2/2 Elemental creatures with Indestructible until end of turn.

{b}{t}: You may discard any number of cards. If you do, Elementals you control get +X/+X until end of turn, where X is the number of cards you discarded this way.