Beacon of Immortality [Mystery Booster] Shadows over Innistrad Promos or you can take one

or you can take one of three other actions:

Set: Revised Edition Type: Enchantment Rarity: Rare Cost: {1}{B} Black creatures get +1/+1

you may transform Dowsing Dagger

Set: Ravnica Allegiance Guild Kit Type: Creature — Dragon Rarity: Mythic Cost: {6}{R}{R} Flying

Set: Core Set 2020 Type: Creature — Elf Warrior Rarity: Rare Cost: {G} Elvish Reclaimer gets +2/+2 as long as there are three or more land cards in your graveyard

Beacon of Immortality [Mystery Booster] Shadows over Innistrad Promos or you can take oneSet: Mystery Booster Type: Instant Rarity: Rare Cost: {5}{W} Double target player's life total. Shuffle Beacon of Immortality into its owner's library. The cave floods with light. A thousand rays shine forth and meld into one.