Chance for Glory in exile (exiled by Elite Arcanist).
Sundial of the Infinite and Elite Arcanist on the battlefield.
Elite Arcanist does not have summoning sickness.
({4} magic symbol) each turn available.
Steps
Activate Elite Arcanist by paying ({3} magic symbol) and tapping it, casting a copy of Chance for Glory without paying its mana cost.
Resolve the Chance for Glory copy, giving creatures you control indestructible, taking an extra turn after this one, and creating a delayed triggered ability.
At the beginning of your end step, if this is an extra turn from Chance for Glory, its delayed triggered ability triggers.
In response, activate Sundial of the Infinite by paying ({1} magic symbol) and tapping it, ending the turn and exiling the triggered ability.