Enchant land
Whenever enchanted land becomes tapped, its controller mills three cards.

Equipped creature gets +1/+0 for each of its colors.
Equip

: Target player mills a card. (They put the top card of their library into their graveyard.)
, , Sacrifice Codex Shredder: Return target card from your graveyard to your hand.

Creatures you control get +3/+3.

Put a +1/+1 counter on target creature.
Put a +1/+1 counter on target creature.

Flying

At the beginning of your upkeep, you may exchange control of Conjured Currency and target permanent you neither own nor control.

If one or more +1/+1 counters would be put on a creature you control, twice that many +1/+1 counters are put on it instead.

This spell can't be countered.
Counter target spell you don't control.
Overload (You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each.")

Create a 3/3 green Centaur creature token, then populate. (Create a token that's a copy of a creature token you control.)

Exile target card from a graveyard.
Draw a card.

Whenever Crosstown Courier deals combat damage to a player, that player mills that many cards.

Trample
Cryptborn Horror enters the battlefield with X +1/+1 counters on it, where X is the total life lost by your opponents this turn.

Return target nonland permanent you don't control to its owner's hand.
Overload (You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each.")

Flying
Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Flying
When Dark Revenant dies, put it on top of its owner's library.

Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.)

Scavenge (, Exile this card from your graveyard: Put a number of +1/+1 counters equal to this card's power on target creature. Scavenge only as a sorcery.)

Whenever a creature you control dies, put X +1/+1 counters on target creature you control, where X is the power of the creature that died.