Spelljack + Chandra, Hope's Beacon + Displacer Kitten

Spelljack

Chandra, Hope's Beacon

Displacer Kitten

How it works

1. Cast any other instant or sorcery card from your hand by paying its mana cost.
2. Chandra and Displacer Kitten triggers.
3. Resolve the Displacer Kitten trigger, blinking Chandra.
4. Resolve the Chandra trigger, creating a copy of the instant or sorcery.
5. Holding priority, cast Spelljack by paying 3, targeting the instant or sorcery cast in step 1.
6. Chandra and Displacer Kitten triggers.
7. Resolve the Displacer Kitten trigger, blinking Chandra.
8. Resolve the Chandra trigger, creating a copy of Spelljack that is targeting the original Spelljack.
9. Resolve the copy of Spelljack, countering the original Spelljack and exiling it with the ability to cast it for free from exile.
10. Cast Spelljack from exile without paying its mana cost, targeting the instant or sorcery cast in step 1.
11. Repeat from step 6.