If either one of the targets of The Animus's last ability is illegal when the ability begins to resolve, nothing will happen when the ability resolves
Yes, in the same way as those collected in boosters
Reducing miracle costs by 4 means powerful cards come down way earlier than expected, creating sudden swings that opponents wont see coming
The deck features a huge number of powerful cat creates many of which have strong secondary abilities include anthem effects (Kaheera, Feline Sovereign, Jazal, Regal Caracal, King of the Pride), card draw (Beast Whisperer, Feral Prowler, Generous Stray), token producers (Cubwarden, Jolrael, Leonin Warleader, Pride Warden, Regal Caracal, Garrison Cat), removal (Stalking Leonin), artifact/enchantment destruction (Enlightened Ascetic, Felidar Cub), and many more
So today, we're going to examine the various potential Dragon-Tribal commanders from Magic