Radhas Firebrand

“Whenever Radha’s Firebrand attacks, target creature defending player controls with power less than Radha’s Firebrand’s power can’t block this turn. <nr> <em>Domain</em> — 5R: Radha’s Firebrand gets +2/+2 until end of turn. This ability costs 1 less to activate for each basic land type among lands you control. Activate only once each turn.”