Ana Sanctuary is a uncommon Enchantment card from The List (PLST), collector number APC-74. Current market price: $0.25, TCGplayer market prices via Scryfall.
At the beginning of your upkeep, if you control a blue or black permanent, target creature gets +1/+1 until end of turn. If you control a blue permanent and a black permanent, that creature gets +5/+5 until end of turn instead.