Krusk, the Technician

Whenever you cast a blue spell, you may pay {u}{u}{u}. If you do, cast a copy of that card, then
create a scrap token.
Whenever you cast a green spell, you may pay {g}{g}. If you do, destroy target artifact or enchantment, then create a scrap token.
Sacrifice X scrap tokens, target creature gets
+X/+X until the end of turn.