Invoke Calamity | Narset's Reversal | Swarm Intelligence

Cards

Invoke Calamity in hand.
Swarm Intelligence on the battlefield.
Narset's Reversal in hand or in your graveyard.
({1} magic symbol) ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) available.

Cast
Invoke Calamity by paying ({1} magic symbol) ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) .
Swarm Intelligence triggers, copying
Invoke Calamity.
Resolve the
Invoke Calamity copy, casting
Narset's Reversal without paying its mana cost.
Swarm Intelligence triggers, copying
Narset's Reversal targeting the original
Narset's Reversal.
Resolve the copy of
Narset's Reversal, copying
Narset's Reversal targeting
Invoke Calamity and returning the original
Narset's Reversal to your hand.
Resolve the
Narset's Reversal copy, copying
Invoke Calamity and returning the original
Invoke Calamity to your hand.
Resolve the
Invoke Calamity copy, casting
Invoke Calamity without paying its mana cost.
Repeat from step 2.
You may also choose to cast any number of instants or sorceries from your hand or graveyard with mana value 4 or less without paying their mana costs during step 3.

Cast all instants and sorceries with mana value 4 or less from your hand and graveyard.
Infinite magecraft triggers.
Infinite storm count.