mutate cards mtg magic the gathering - How will Backup interact with Mutate? Question about the mutate keyword

The ninjitsu ability will be nice in a few spots, and greatly appreciated in combination with a disturbed Malevolent Hermit

As for Skittering CicadaSkittering Cicada, I'd just like to state how much of a tragedy it is that Shimmer MyrShimmer Myr is still in more decks than Liberator, Urza's BattlethopterLiberator, Urza's Battlethopter, which is still in more decks than Skittering CicadaSkittering Cicada

This may result in the target creature also dying

The mana cost is actually pretty challenging too in your typical Limited deck, and you really want to get this down before you start gaining life, but doing that will not be easy