Basri's Aegis is a rare Sorcery card from Core Set 2021 (M21), collector number 322. Current market price: $0.09, TCGplayer market prices via Scryfall.
Put a +1/+1 counter on each of up to two target creatures. You may search your library and/or graveyard for a card named Basri, Devoted Paladin, reveal it, and put it into your hand. If you search your library this way, shuffle.