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Add your own Sheoldred, the Apocalypse to the 99 to offset the life loss and prepare for the inevitable Orcish Bowmaster triggers to get pointed your way
generally, wed say that you should sleeve any foil card, or any card youre going to use in a deck, but you may want to save your sleeves for only the rarest card types
Recent sets from Kaldheim forward have really juiced Angel tribal with cards like Youthful Valkyrie, Righteous Valkyrie, and Giada, Font of Hope if you want to go that route
Use them responsibly and remember that if youre playing cards your opponents dont enjoy playing against, they probably wont want to play with you any more: Ach
For those of you who will remind us that Black Lotus is banned in Commander, thats fine