Mangara's Blessing is a uncommon Instant card from Mirage (MIR), collector number 25. Current market price: $0.24, TCGplayer market prices via Scryfall.
You gain 5 life. When a spell or ability an opponent controls causes you to discard this card, you gain 2 life, and you return this card from your graveyard to your hand at the beginning of the next end step.