Inseparable Twins

Landfall — Whenever a Land enters the
battlefield under your control, Inseparable
Twins gets an +1/+1 counter and have indestructible, vigilance and haste until end of
turn.
{1}{u/r}{u/r}{t}: Search your library for a basic land
card and put it onto the battlefield tapped. Then shuffle your library.
"Together they are one. An unstoppable beast"