Sulfur Elemental

Players still get priority while a card with split second is on the stack; their options are just limited to mana abilities and certain special actions.

Split second doesn't stop triggered abilities from triggering, such as that of Chalice of the Void. If one does, its controller puts it on the stack and chooses targets for it, if any. Those abilities will resolve as normal.

Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to white creatures may become lethal if Sulfur Elemental enters the battlefield during that turn.

If the resolution of a triggered ability involves casting a spell, that spell can't be cast if a spell with split second is on the stack.