Ohm, Scion of Gaea

Whenever you cast a historic spell for the first time each turn, search your library for a basic land card and put it on the battlefield under your control.
Whenever a land enters the battlefield under
your control for the second time each turn, exile target non-land non-creature permanent.
"Even Urza crafting his scion had a few failed attempts to begin." - Karn, Scion of Urza