You may activate loyalty abilities of Teferi, Master of Time on any player's turn any time you could cast an instant.
[+1]: Draw a card, then discard a card.
[-3]: Target creature you don't control phases out. (Treat it and anything attached to it as though they don't exist until its controller's next turn.) [-10]: Take two extra turns after this one.
Near Mint - $8.80
Near Mint Non-English - $8.80
Lightly Played - $7.90
Lightly Played Non-English - $7.90
Played - $6.20
Played Non-English - $6.20
Heavily Played - $5.30
Heavily Played Non-English - $5.30
Damaged - $4.40
Damaged Non-English - $4.40
Foil Prices
Near Mint Foil - $10.40
Near Mint Foil Non-English - $10.40
Lightly Played Foil - $9.30
Lightly Played Foil Non-English - $9.30
Played Foil - $7.30
Played Foil Non-English - $7.30
Heavily Played Foil - $6.20
Heavily Played Foil Non-English - $6.20
Damaged Foil - $5.20
Damaged Foil Non-English - $5.20