Flash
When Conduit of Change enters the battlefield, if you cast it, return all other nonland permanents to their owner's hands.
Spellcharge 7

Enchant nonland permanent
Enchanted permanent can't attack or block, and its activated abilities can't be activated unless they're mana abilities.
Enchanted permanent has “At the beginning of your upkeep, you lose 1 life.”

Indulgence
When Conspiracy of Wealth enters the battlefield, draw a card.
Whenever you indulge, you may exile target card from a graveyard.

Enchant creature
Whenever enchanted creature deals combat damage to a player or planeswalker, you may sacrifice it. If you do, untap all creatures you control and after this phase, there is an additional combat phase.

You may look at the top card of your library any time.
You may cast artifact and enchantment spells from the top of your library.
{T}, Sacrifice three artifacts and/or enchantments: Search your library for a card, then shuffle and put that card on top.

{C/B}: Integrate target card in a graveyard.
As long as a creature card with flying is integrated onto Corpsepyre Fiend, it has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, reach, trample, and vigilance.

{T}: Add {C}.
{X}{1}: Court of Miracles dares X.

Flying, ward {1}
Whenever you cast an instant or sorcery spell, mill a card. Return an instant or sorcery card milled this way to your hand. If you can't, put a +1/+1 counter on Covetous Frostwyrm.

Gain control of target permanent. Untap it. It gains haste until end of turn.

As Crownguard Ban enters the battlefield, choose a card name.
Spells with the chosen name can't be cast.
{3}, Exile a card from your hand with the chosen name: Draw a card. Any player may activate this ability.

The next spell you cast this turn may be cast as though it had flash. When you cast that spell, copy it. You may choose new targets for the copy.
Flashback {3}{U}{U}

[+1]: Crux deals 1 damage to target player or planeswalker. Put a chain counter on up to one target artifact or nonbasic land. It loses all abilities except mana abilities as long as it has a chain counter on it.
[–2]: Discard a card. When you do, Crux deals damage equal to the discarded card's mana value to up to one target creature and you draw a card.
[–6]: Exile target red instant or sorcery card from your graveyard. Add {R}{R}{R}, then you get an emblem with “You may cast copies of the exiled card.”

When Cryptolabe enters, exile your hand and the top card of your library. You may play cards exiled this way for as long as they remain exiled.
{T}: Add {G}{U}. This mana can't be spent to cast spells from your hand.

Deathtouch
Ward—Pay 4 life.
Whenever Cybele of the Frozen Faith deals combat damage to a player, you may skip your next turn. If you do, at the beginning of your next turn's upkeep, each opponent discards their hand, you draw seven cards, then put seven +1/+1 counters on Cybele.

Untap all lands you control. Until end of turn, they become 1/1 Elemental artifact creatures with vigilance, indestructible, and haste in addition to their other types.

If an effect would create one or more tokens under your control, it creates twice that many tokens instead.
Tap six untapped artifacts, creatures, and/or lands you control: Double the number of each kind of counter on each permanent you control.

When D'Enzo Orsino enters the battlefield, you may search your library for a card named Marie Laurent, a card named Hans Nehmann and a card named Diago Maldovo, reveal them, put them into your hand, then shuffle.
Prevent all combat damage that would be dealt to legendary Allies you control.

Search your library for a nonblack card, reveal it, put it into your hand, then shuffle.
Create a Treasure token.

When Data Weaver enters, integrate the top two cards of target opponent's library.
You may play cards that are integrated onto permanents you control, and mana of any type can be spent to cast them.

Exile all creatures and all cards from each player's hand. Any player may play those cards during their turn for as long as they remain exiled, and mana of any type can be spent to cast those spells.
Exile Dawn of Peace.

Ward {2}
At the beginning of your upkeep, put a +1/+1 counter on Decavolt Reactor.

You may cast this spell as though it had flash by sacrificing a creature in addition to its other costs. If you do, when it enters the battlefield, attach it to target creature you control.
Equipped creature gets +2/+0 and has “Whenever this creature deals combat damage to a player, that player discards a card.”
Equip—Pay 2 life.

Ward {1}
Decorated Duelist enters the battlefield with your choice of two different counters on it from among lifelink, vigilance, and first strike.

Create a 1/1 colorless Construct artifact creature token, then put a +1/+1 counter on each Construct you control.

Rather than pay the mana cost for a spell, you may discard a card that shares a color with that spell.
If you would be dealt damage, discard that many cards instead.
When you have no cards in hand, you lose the game.