[Arkham]

If it were to roll 3 times I’d go with it at the start of the game and that’s it until that figure is destroyed. But yeah, as-is can lead to more varied ongoing results. Could just think of it as the cards unfolding over time rather than them revisisting for one card each time.

As for teleporters, I’ll say that Zatanna II has a pretty fun useful teleport function. I don’t see anything wrong with multiple telwporters, but I’m not sure who all you’re thibkin of.