Bruhnir of the Sand

Partner with Bragi of the Steppe (When this
creature enters the battlefield, target player may put
Bragi into their hand from their library, then shuffle.)
First strike, trample
When Bruhnir of the Sand attacks alone, you
may tap any number of untapped Minotaurs you control. Until the end of your turn, Bruhnir gets
+1/+1 for each creature tapped this way.