Sig's Bodyguard

As long as you control another multicoloured creature that is blue, black, and red, Sig's Bodyguard gets +2/+2.
{u}: Until end of turn, draw a card whenever Sig's Bodyguard deals combat damage to a player.
{b}: Sig's Bodyguard has deathtouch until end
of turn.
{r}: Sig's Bodyguard has double strike until end
of turn.