Flying
{T}: Add {C}.
Spellcharge 4

Search your library for a basic land card, reveal it, then shuffle. If you control six or more lands, put it onto the battlefield tapped. Otherwise, put it into your hand.

Return target creature to its owner's hand. If you've cast another instant or sorcery spell this turn, draw a card.

Equipped creature gets +2/+2 and can't be blocked by more than one creature.
Equip {4}

Enchant permanent
Enchanted permanent can't attack, block, or wander.

When Forgemaster Dreadnought enters, create three Treasure tokens.
Spellcharge 9

Choose target card in a graveyard other than a basic land. Search its owner's graveyard, hand, and library for any number of cards with the same name as that card and exile them. You gain 1 life for each card exiled this way. That player draws a card for each card exiled from their hand this way.
Flashback {3}{B}

Whenever Forgotten Cultivator attacks, mill three cards. Return a permanent card from among the milled cards to your hand.
Spellcharge 4

At the beginning of your end step, if a creature died this turn, exile the top card of your library. Until the end of your next turn, you may play that card.

{3}{U}: Draw a card, then discard a card.

{T}: Add {G}.

Indulgence
Whenever you indulge, you may exile target instant or sorcery card from your graveyard. If you do, cast a copy of that card without paying its mana cost.

Create a tapped Leyshard token.

Whenever you amp it up, Fraying Gearhead gets +1/+0 and gains first strike until end of turn.

When Free Market enters, target creature gets +2/+2 until end of turn.
You control a creature with power 4 or greater.
You control a creature with toughness 4 or greater.

Whenever you attack, create a 1/1 colorless Soldier creature token that's tapped and attacking.

Exile target creature you control, then return that card to the battlefield under its owner's control.

Whenever Freightyard Scrappers attacks, create a Treasure token.
{X}, Sacrifice an artifact: Return target artifact card with mana value X or less from your graveyard to the battlefield. Activate only as a sorcery and only once each turn.

Flying
{VP}{VP}{VP}: Frequency Faeries gets +2/-2 until end of turn.

Frequency Jolt deals 5 damage to target creature, then it deals 2 damage to that creature's controller for each time you've amped it up this turn.

{VP}{VP}{VP}: Put a +1/+1 counter on Frequency Omnivore.

Whenever you amp it up, put a +1/+1 counter on Fresh-Faced Idol.

Frostfire Geysers enters tapped unless you control a basic Island or a basic Mountain.