Whenever a creature enchanted by an Aura with umbra armor would be destroyed, you instead remove all damage and destroy the Aura, so targeted destroy-based removal spells are no longer a 2-for-1
Its a way to increase the density of typal cards in decks like giants or treefolk, adding a cheap green creature with a good ETB to the mix
Considering the massive role Teferi has in the recent Core Set 2020 and in the metagame (Teferi, Time Raveller has been banned in Historic because of how powerful it is), it's nice to see an earlier part of his life be brought back for Commander Legends
I also like Bibbidi Bobbidi Boo as a flexible card that can help us double-down on an enter the board effect or just to keep a key character safe from challenges
What is the rarity of this Zorua card
Look for creatures that compliment your commander by either helping you cast them, or playing into their goals