When this creature enters, reveal the top ten cards of your library. For each nonland, non-Golem permanent card revealed this way, you may sacrifice a permanent that shares a card type with it. If you do, put that permanent card onto the battlefield under your control. Put the rest on the bottom of your library in a random order.

Return any number of creature cards with total mana value less than or equal to twice your devotion to black from your graveyard to the battlefield.

Flash
If a player would search a library for one or more cards, they reveal those cards, and can't find nonbasic cards.

This land enters tapped unless you control one or fewer other lands.
{T}: Add {U} or {R}.
Cycling {2}

Target creature you control gets +2/+2 and gains indestructible until end of turn. If it was the target of another spell or ability this turn, create two 1/1 white Bird creature tokens with flying.

Trample
Ruin, the First Shard enters with a +1/+1 counter on it for each mana spent to cast it.

Sacrifice any number of permanents. Ruinous Portents deals X damage to each creature your opponents control and you draw X cards, where X is the number of permanents sacrificed this way.

{1}{R}: Rumbling Volcamel and up to one other target creature you control get +1/+0 until end of turn.
Whenever you activate a nonmana ability, if you've spent at least six mana to activate nonmana abilities this turn, transform Rumbling Volcamel.

Put a +1/+1 counter on target creature you control, then double the number of +1/+1 counters on it.

{X}{U}: Draw X cards. Activate only if this Subroutine ran this turn.

Whenever you discard a nonland card, copy it. You may cast the copy without paying its mana cost.

[+1]: Up to one target nonland permanent gets -1/-1 and loses all abilities until your next turn.
[0]: Target creature you control gets +2/+2 and gains lifelink until your next turn.
[–1]: Each player discards a card. Then you may pay 2 life. If you do, draw a card.
[–3]: You and target opponent's life totals each become equal to half your combined life totals, rounded down.

{T}: Each player draws a card.
{1}, {T}: Each player draws two cards.
{2}, {T}: Each player draws three cards.

Prowess
When Satyr Arsonist enters, destroy up to one target nonbasic land. Its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle.

Whenever you cast an instant or sorcery spell, choose one that hasn't been chosen this turn —
• Create a 1/1 colorless Construct artifact creature token.
• Discard a card, then draw a card.
• Add one mana of any type.

As an additional cost to cast this spell, exile X cards from your graveyard.
You draw X cards and gain X life, then each opponent loses X life.

Whenever Scattering Swine deals combat damage to a player, you may return a permanent you control to its owner's hand. If you do, defending player loses 3 life unless they discard a card that shares a type with the returned permanent.

When this enchantment enters, create a tapped Treasure token.
At the beginning of your upkeep, exile the top three cards of your library. Until end of turn, you may cast each of those cards by sacrificing a permanent in addition to paying their other costs.

Double target creature's power and toughness until end of turn.
Flashback {1}{G}

Whenever one or more creatures you control deal combat damage to a player, you may draw that many cards. If you do, discard a card.
Exile two creature cards from your graveyard: Scrapyard Mecha becomes an artifact creature until end of turn. Activate only as a sorcery.
Crew 2

Flow — {4}{W}: Create a tapped 0/0 colorless Golem artifact creature token with “This creature gets +1/+1 for each artifact you control.”

Target player reveals their hand. You may choose a nonland card from it. If you do, that player discards that card. Otherwise, draw a card.

Exile all creatures you don't control. Then return those cards to the battlefield tapped under their owners' control unless you've cast another spell named Second Crown's Fall this game. Then exile Second Crown's Fall.

Whenever this enchantment or another nonland, nontoken permanent you control enters, if it wasn't cast, draw a card. You may put a land card from your hand onto the battlefield tapped.
Creatures you control with power or toughness 1 or less can't be blocked.

Whenever a Forest you control enters, put a +1/+1 counter on Seeker of New Horizons. Then you may remove four +1/+1 counters from among creatures you control. If you do, bless that land.