Sylvan Library Strixhaven Spend this mana only to

Spend this mana only to cast colorless Eldrazi spells or activate abilities of colorless Eldrazi

{T}: Put your choice of a menace

Creatures you control of the chosen type get +1/+1 for each fellowship counter on this artifact

Instant and sorcery spells you cast cost {1} less to cast

Whenever a player casts a spell with mana value equal to the number of charge counters on this artifact

Sylvan Library Strixhaven Spend this mana only toAt the beginning of your draw step, you may draw two additional cards. If you do, choose two cards in your hand drawn this turn. For each of those cards, pay 4 life or put the card on top of your library.