Axgard Armory enters the battlefield tapped. {T}: Add {W}. {1}{R}{R}{W}, {T}, Sacrifice Axgard Armory: Search your library for an Aura card and/or an Equipment card, reveal them, put them into your hand, then shuffle.
Azorius Chancery enters the battlefield tapped. When Azorius Chancery enters the battlefield, return a land you control to its owner's hand. {T}: Add {W}{U}.
Bad River enters the battlefield tapped. {T}, Sacrifice Bad River: Search your library for an Island or Swamp card, put it onto the battlefield, then shuffle.
At the beginning of combat on your turn, exile up to one target creature. Return it to the battlefield under its owner's control at the beginning of the next end step. When chaos ensues, cards can't enter the battlefield from exile this turn. Then planeswalk.
Whenever you sacrifice another nontoken artifact or creature, exile it. {2}, {T}, Sacrifice another artifact or creature: Draw a card. {3}, {T}, Sacrifice Bag of Devouring: Roll a d10. Return up to X cards from among cards exiled with Bag of Devouring to their owners' hands, where X is the result.
Whenever you discard a card, exile that card from your graveyard. {2}, {T}: Draw a card, then discard a card. {4}, {T}, Sacrifice Bag of Holding: Return all cards exiled with Bag of Holding to their owner's hand.
{T}: Change the text of target white enchantment you control that doesn't have cumulative upkeep by replacing all instances of one color word with another. That enchantment gains "Cumulative upkeep {1}."
If Balduvian Trading Post would enter the battlefield, sacrifice an untapped Mountain instead. If you do, put Balduvian Trading Post onto the battlefield. If you don't, put it into its owner's graveyard. {T}: Add {C}{R}. {1}, {T}: Balduvian Trading Post deals 1 damage to target attacking creature.
Visit — Choose one. • Create a 1/1 red Balloon creature token with flying. • Sacrifice a Balloon. If you do, target creature gains flying until end of turn.