B.U.R.N, destroyer of deserts

B.U.R.N, destroyer of deserts's power and toughness are equal to the number of activated abilities on all of your creatures

when B.U.R.N, destroyer of deserts enters or attacks you may pay {r}{b}{w} and 3 life if you do give target creature you control "{t} add {w},{b},or{r}"

{t} add {w},{b},or {r}