Of course it runs the typical cards like Sign in Blood, Read the Bones, and Nights Whisper
The ability to copy only an Ally creature is narrow enough that it's not able to be played in anything but the most dedicated Ally deck
For instance, against Tron you need every card to either keep them off balance or end the game before they recover
BPhillipYork: I like this a lot, really fun kind of card
However, before we talk about the cost of playing other games, we do need to talk about one more thing: the Magic Online economy
(2020-06-23) Once the first triggered ability is on the stack, it won't trigger again, even if more damage is prevented and more incarnation counters are put onto it