Say what? Fully resolve? What?
1. Soulstoke's ability resolves. You put an elemental creature card from your hand onto the battlefield. A delayed triggered ability is also set up as part of this resolution, that won't trigger until the beginning of the next end step. At this point, the Soulstoke's ability has
fully resolved; the delayed trigger that was created as part of that resolution has not yet triggered though.
2. Turn continues as normal.
3. The end step rolls around. The delayed trigger goes off and is put on the stack.
4. The active player activates Sundial of the Infinite
, ending the turn. Once this resolves, all objects on the stack - including the delayed trigger - are exiled.
Are you agreeing with this or not?