You may cast this spell without paying its mana cost if your devotion to black is four or greater.
Deathtouch
Whenever Chrolcatos deals combat damage to player, you draw a card and you lose 1 life.

Trample
Approval — Chromagoyf's power and toughness are each equal to the number of colors among permanents you control.

Choose any number —
• Destroy all multicolored creatures.
• Destroy all monocolored creatures.
• Destroy all colorless creatures.

Choose one. If this spell's flashback cost was paid, instead choose three and you may choose the same mode more than once.
• Destroy target artifact.
• This spell deals 3 damage to any target.
• You may discard one or more cards. If you do, draw that many cards plus one.
Flashback {7}{R}{R}

Choose one. If this spell's flashback cost was paid, instead choose three and you may choose the same mode more than once.
• Draw a card, then you may put a permanent card from your hand onto the battlefield.
• You gain 1 life for each permanent you control.
• Destroy target noncreature permanent.
Flashback {7}{G}{G}

Choose one. If this spell's flashback cost was paid, instead choose three and you may choose the same mode more than once.
• Create three 1/1 white Human creature tokens.
• Put a +1/+1 counter on each creature you control.
• Exile target nonland permanent until you control no creatures.
Flashback {6}{W}{W}

Choose one. If this spell's flashback cost was paid, instead choose three and you may choose the same mode more than once.
• Target player sacrifices a creature and a planeswalker.
• Target player discards two cards, then exiles their graveyard.
• All creatures get -2/-2 until end of turn.
Flashback {7}{B}{B}

Choose one. If this spell's flashback cost was paid, instead choose three and you may choose the same mode more than once.
• Draw two cards.
• Create a token that's a copy of target artifact or creature you control.
• Target player mills seven cards.
Flashback {6}{U}{U}

Flying, lifelink
{2}{W}: Untap each creature you've activated this turn. They get +1/+1 and gain lifelink until end of turn. Activate only once each turn.

Creatures you control have ward {2}.
[+1]: Scry 2. You may put a loyalty counter on another planeswalker you control.
[–1]: Create a 0/0 white Army creature token, then put a +1/+1 counter on each Army you control.
[–6]: Exile target nonland permanent.

Whenever Claes, Shield of Karda attacks, another target attacking creature you control gains indestructible until end of turn.
Whenever a planeswalker you control enters, you may exile Claes, then return him to the battlefield transformed with a number of loyalty counters on him equal to the starting loyalty of that planeswalker.

Choose a color. Exile all permanents of the chosen color. Until the end of your next turn, if you would add {C}, instead add {C} and one mana of the chosen color.

{T}: Add {C}.
If a spell or ability you control would produce {C}, you may pay 1 life. If you do, it produces {G} instead.

{T}: Add {C}.
If a spell or ability you control would produce {C}, you may pay 1 life. If you do, it produces {B} instead.

{T}: Add {C}.
If a spell or ability you control would produce {C}, you may pay 1 life. If you do, it produces {U} instead.

{T}: Add {C}.
If a spell or ability you control would produce {C}, you may pay 1 life. If you do, it produces {W} instead.

{T}: Add {C}.
If a spell or ability you control would produce {C}, you may pay 1 life. If you do, it produces {R} instead.

{T}, Sacrifice an artifact: Add one mana of any type.
Once each turn, when you cast an instant or sorcery spell, you may create a 1/1 colorless Construct artifact creature token.

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

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

Flash
Approval — When Congressional Kraken enters, return each nonland permanent with mana value less than or equal to the number of colors among permanents you control to their owners' hands.

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.

Whenever Corrupt Congressman enters or attacks, make a pledge.
Cliques you control have “Pledge — {4}: Each opponent loses 3 life unless they discard a card or sacrifice a creature. Activate only as a sorcery.”