Rukar, Rubble Spikefling

Partner with Yulo, Rock Courser.
Flying, Menace
When Rukar, Rubble Spikefling attacks, you may choose three target creatures. Pick one of them at random. That creature must block Rukar this turn.
{t} Target creature you control named Yulo, Rock Courser gets +3/+3 and gains trample until end of turn.