Impact cubes are used for fighting against bosses or towers/noobs.
Impact cubes explode on impact and do a great amount of DMG. They are mostly used in OP Battle Kits ranging from 2-3 Impact Cubes, a Fusion or a Regen Coil, Lava Greatsword, and full Spiked Armour. Some Battle Kits include the Spiked Shield depending on the bosses weaknesses or difficulty.
https://web.roblox.com/games/97984632...
Cube Combination is still in beta, so don't expect the best of it.