For example, characters who spend a turn at Arkham Asylum will regain a point to their sanity score, or they may spend $2 in-game to regain their maximum sanity
It can target any creature, tapped or untapped
Turn it face up any time for its mana cost if its a creature card.) Whenever a creature you control but dont own dies, its owner loses 2 life and you gain 2 life
Do you want more details
For exemple, early in the game I could go get my Sol Ring if i am lacking in mana, or maybe even Mana Vault if I have Manifold Key on the board - which is kind of a best case scenario, because not only can the key untap the vault, but the mana from the vault can also render my commander unblockable
Few capture that true horror essence for me like Abomination, though