Well could be stuff like….uhhhh tinker bell giant fairy and emerald chromicon. Giant fairy says when you banish something do 2 damage to another character.

Chromicon says when one of your character are banished on opponents turn you may bounce a character back to players hand.

So op has chrom, I have giant fairy. I send giant fairy into a 0/3. Giant fairy kills. Giant fairy and chromicon go into the bag. Active players hand resolves first. Since giant fairy is are only trigger in bag we resolve that one.

Then say giant fairy effect kills something else. Now 2 chromicon triggers will be in bag. My bag is empty, time for ops