"We threw dried fruit to the drakes that rode the air, streaming along the Weatherlight's side as we sailed amidst the clouds." —Sisay, Captain of the Weatherlight
Until your next turn, your life total can't change and you gain protection from everything. All permanents you control phase out. Exile Teferi's Protection.
"If you're doing it alone, you're doing it wrong." —Sheldon Menery
At the beginning of each player's draw step, that player puts the cards in their hand on the bottom of their library in any order, then draws that many cards.
At the beginning of each player's upkeep, that player chooses artifact, creature, land, or non-Aura enchantment. All nontoken permanents of that type phase out.
"Fire is dead. Water has killed him." —From The Stories of Nature
Counter target spell or ability an opponent controls that targets a land you control. If a permanent's ability is countered this way, destroy that permanent. Draw two cards.
Enchant planeswalker Enchanted planeswalker has "[–12]: You get an emblem with 'You may activate loyalty abilities of planeswalkers you control on any player's turn any time you could cast an instant.'" Whenever you draw a card, put a loyalty counter on enchanted planeswalker.
Exile target permanent you control. Return that card to the battlefield under its owner's control at the beginning of the next end step. If it enters the battlefield as a creature, it enters with an additional +1/+1 counter on it.
Flash When Teferi's Wavecaster enters the battlefield, you may search your library and/or graveyard for a card named Teferi, Timeless Voyager, reveal it, and put it into your hand. If you search your library this way, shuffle.
[+1]: Draw a card. At the beginning of the next end step, untap up to two lands. [–3]: Put target nonland permanent into its owner's library third from the top. [–8]: You get an emblem with "Whenever you draw a card, exile target permanent an opponent controls."
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. [–10]: Take two extra turns after this one.
[+1]: Look at the top two cards of your library. Put one of them into your hand and the other on the bottom of your library. [–1]: Untap up to four target permanents. [–10]: You get an emblem with "You may activate loyalty abilities of planeswalkers you control on any player's turn any time you could cast an instant." Teferi, Temporal Archmage can be your commander.
Whenever you draw a card, put a loyalty counter on Teferi, Temporal Pilgrim. [0]: Draw a card. [–2]: Create a 2/2 blue Spirit creature token with vigilance and "Whenever you draw a card, put a +1/+1 counter on this creature." [–12]: Target opponent chooses a permanent they control and returns it to its owner's hand. Then they shuffle each nonland permanent they control into its owner's library.
Each opponent can cast spells only any time they could cast a sorcery. [+1]: Until your next turn, you may cast sorcery spells as though they had flash. [–3]: Return up to one target artifact, creature, or enchantment to its owner's hand. Draw a card.
[+1]: Draw a card. [–3]: Put target creature on top of its owner's library. [–8]: Each creature target opponent controls phases out. Until the end of your next turn, they can't phase in.