Items shield potion (explosion-immunity potion)

[SaltyBeggar]

this potion would make you immune to all the kinds of explosion that destroy tiles (dynamites, bombs, sticky bombs, etc), but it doesn't make you immune to explosion made by enemies, because they doesn't destroy tiles, and explosions made by world-generated traps, because they weren't placed by the player.
this would help in doing hellevators, evil-biome divisions and clearing areas.
one additional thing about tile-destroying explosion, make them destroy trees, this would help a bit more in clearing areas.