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You can only use each effect of "Spellkeeper Hatifas" once per turn
However, this card has all sorts of tricks
Commander rules allow you to start with 40 life, which is already a huge boost, and there are more than enough ways to gain life, even infinite life
Certain cards (like Manor Guardian, visible in the gallery above) will allow you to seek a card with specific criteria, randomly pulling one from your library that meets that criteria without shuffling afterward something that couldnt happen at the tabletop without a player manually looking through their deck
detach 1 material from a monster you control, and if you do, Special Summon 1 Level 2 monster from your Deck, also neither player can Special Summon monsters for the rest of this turn, except Level/Rank/Link 2 monsters