Ohen, nature's will

Partner with Ada, Nature's malice
trample
{r}{g}{t}:each player sacrifices a land
{r/g}{r/g}{r/g}, sacrifice a creature:target elemental
gains +X/+X until end of the turn, where X is
the number of cards that leaved your graveyard
this turn, don't use this ability targeting the same
elemental more than once per turn