you have a face up spirit reaper.
your opponent normal summons tsukuyomi targeting your face up spirit reaper.
you chain effect veiler.
what happens and why?
Answer by Abdo_Tarek:
CL1 yomi
Cl2 veiler,
Veiler negates yomi, yomi resolves negated, it already targeted reaper, reaper is destroyed by it's own continuous effect without starting a chain
EP, opp can choose to resolve yomi negated, or pass priority, if he passes, I can choose to end veiler or pass prio, if I pass, he is forced to resolve yomi while negated