At the low cost of three mana (two plus the fact that you have to tap the Refuge), you can foist some pretty big surprises on folks
This means that based on a player's choice of commander, they will have access to different types of cards, meaning differing color identities have their own strengths and weaknesses players should acknowledge when determining their deck's commander
One sideboard slot to potentially generate a card in grindy matchups intrigues me greatly, and will forever be in my maybe board for those events where I cant figure out a 15th card in my 75
Since it makes Beau, you have upwards of 12 power that enters the battlefield
It was extremely difficult to narrow this list down to just 10 cards, so Id like to leave you with some other angels that nearly made the list
Theres a torturers pleasure to paralyze Juzam or Serendib and then keep them from the fourth mana, hehehe