If you are talking about Eggwars, I believe adding lava bucket to the game would be too overpowered. You could cover your entire egg with lava, making it impossible to be destroyed, creating performance issues and ruining the spirit of the game which is PvP fighting.Can we another player by throwing lava on them. It's seems not good but it's fun when you Just got a bucket of lava and your opponent got iron armor, lol XD