Radha, Domri's Avenger

Riot (This creature enters the battlefield with your choice of a +1/+1 counter or haste.)
Whenever Radha, Domri's Avenger attacks, if it entered the battlefield this turn or if its power is
4 or more, you may search your library for a basic land card and put it onto the battlefield tapped.
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"Keld can wait. I won't rest until the rubblebelt covers all of Ravnica."