When Arena Rector dies, you may exile it. If you do, search your library for a planeswalker card, put it onto the battlefield, then shuffle.

Each player shuffles their hand and graveyard into their library, then draws seven cards. Exile Emergency Powers. Addendum — If you cast this spell during your main phase, you may put a permanent card with mana value 7 or less from your hand onto the battlefield.

Bountiful Promenade enters the battlefield tapped unless you have two or more opponents. {T}: Add {G} or {W}.

Castle Vantress enters the battlefield tapped unless you control an Island. {T}: Add {U}. {2}{U}{U}, {T}: Scry 2.

({T}: Add {G}.)

Whenever you cast a planeswalker spell, you gain 1 life. {T}: Add {C}. {1}, {T}: Add two mana of different colors. Spend this mana only to cast planeswalker spells.

({T}: Add {U}.)

({T}: Add {W}.)

Rejuvenating Springs enters the battlefield tapped unless you have two or more opponents. {T}: Add {G} or {U}.

Sea of Clouds enters the battlefield tapped unless you have two or more opponents. {T}: Add {W} or {U}.

({T}: Add {B}.)

As long as it's your turn, Gideon Blackblade is a 4/4 Human Soldier creature with indestructible that's still a planeswalker. Prevent all damage that would be dealt to Gideon Blackblade during your turn. +1: Up to one other target creature you control gains your choice of vigilance, lifelink, or indestructible until end of turn. −6: Exile target nonland permanent.

+1: Until your next turn, prevent all damage target permanent would deal. 0: Until end of turn, Gideon of the Trials becomes a 4/4 Human Soldier creature with indestructible that's still a planeswalker. Prevent all damage that would be dealt to him this turn. 0: You get an emblem with "As long as you control a Gideon planeswalker, you can't lose the game and your opponents can't win the game."

Each other planeswalker you control has the loyalty abilities of Kasmina, Enigma Sage. +2: Scry 1. −X: Create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it. −8: Search your library for an instant or sorcery card that shares a color with this planeswalker, exile that card, then shuffle. You may cast that card without paying its mana cost.

+1: Exile up to two target cards from a single graveyard. You gain 2 life if at least one creature card was exiled this way. −1: Exile target nonland permanent with mana value 1 or less. −5: Kaya, Orzhov Usurper deals damage to target player equal to the number of cards that player owns in exile and you gain that much life.

Each opponent can't draw more than one card each turn. −2: Look at the top four cards of your library. You may reveal a noncreature, nonland card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

As long as it's your turn, creatures and planeswalkers you control have lifelink. +2: Sorin, Vengeful Bloodlord deals 1 damage to target player or planeswalker. −X: Return target creature card with mana value X from your graveyard to the battlefield. That creature is a Vampire in addition to its other types.

(You may cast a legendary sorcery only if you control a legendary creature or planeswalker.) Return all legendary permanent cards from your graveyard to the battlefield.

This spell can't be countered. Destroy all creatures.

Put all creatures on the bottom of their owners' libraries. Miracle {W} (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)