Thousand-Year Storm | Narset's Reversal

Cards

Lands (or artifacts, or creatures) sufficient to produce ({2} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) .

Cast
Turnabout.
Thousand-Year Storm triggers.
Allow any
Turnabout copies to resolve, maintaining the original.
Cast
Narset's Reversal targeting
Turnabout.
Thousand-Year Storm triggers.
Have at least one copy of
Narset's Reversal target the original
Narset's Reversal.
When that copy of
Narset's Reversal resolves, target the original
Turnabout with the new copy of
Narset's Reversal created.
When that new copy of
Narset's Reversal to resolves, target yourself with the copy of
Turnabout.
When it resolves, untap all lands (or artifacts, or creatures) you control.
Repeat.

This combo has been estimated to be Exhibition (Bracket 1+).