You could also lean more heavily into tokens and have ways to double up on your triggers, like Purphoros, God of the Forge or Witty Roastmaster if you want a bigger group-slug finish
Granting a buff, a Lifelink Counter, and temporary indestructibility, Arwen can do a lot of work, all on her own
You choose whether or not to cast the instant or sorcery card as the last triggered ability resolves
Add in that Ephara is indestructible, and it becomes very difficult to stop this deck once it really gets going
In a nutshell, the deck uses a combination of powerful suspend spells and the "time travel" mechanic to cheat powerful spells out early
Can I count a card as if it's done by a certain artist as long as some version of the card (with the same name) is illustrated by the same artist