Well…
Let’s split this in 2:
- Buffing lightshow by reducing it’s cost:
I particularly not against but that version would end being reverted.
Because you gonna be able to pile all lightshow in a single turn creating a perfect clear turn.
In other words i believe people should stop being so dramatic about damage output itself instead and that lightshow would probably be more near the correct place dealing 6 damage.
- Building a deck that makes recursive use of any spell as mage.
Using cards like rewind is the own cost for lightshow escalation effect.
I not defending a buff at rewind in any way. That card is dangerous to even exist.
But it was smartly put at cost 2 were you have a decent tempo loss from discovering a card from that extremely premium pool.
Turning it’s excessive cost compared with other cards that discover a card already the own drawback for any mage deck who plan that recursive use of spells
(casting the same spell many times for who not understood).