Hypothesizzle

Draw two cards. Then you may discard a nonland card. When you do, Hypothesizzle deals 4 damage to target creature.

Risk Factor

Target opponent may have Risk Factor deal 4 damage to them. If that player doesn’t, you draw three cards.
Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its other costs. Then exile this card.)

Stitcher’s Supplier

When Stitcher’s Supplier enters or dies, mill three cards. (Put the top three cards of your library into your graveyard.)

Exclusion Mage

When this creature enters, return target creature an opponent controls to its owner’s hand.

Jungle Wayfinder

When Jungle Wayfinder enters, each player may search their library for a basic land card, reveal it, put it into their hand, then shuffle.

Keldon Raider

When Keldon Raider enters, you may discard a card. If you do, draw a card.

Artificer’s Assistant

Flying
Whenever you cast a historic spell, scry 1. (Artifacts, legendaries, and Sagas are historic. To scry 1, look at the top card of your library, then you may put that card on the bottom.)

Forerunner of the Heralds

When Forerunner of the Heralds enters, you may search your library for a Merfolk card, reveal it, then shuffle and put that card on top.
Whenever another Merfolk you control enters, put a +1/+1 counter on Forerunner of the Heralds.

Giltgrove Stalker

Giltgrove Stalker can’t be blocked by creatures with power 2 or less.

Everythingamajig

Sacrifice a land: You gain 2 life.
Sacrifice a creature: Add .
, Discard a card: Search your library for a card that shares a complete word in its name with the name of the discarded card, reveal it, put it into your hand, then shuffle.

Everythingamajig

: Flip a coin. If you win the flip, add . Activate only as an instant.
, : Target player discards a card. Activate only during your turn.
: Everythingamajig becomes an X/X Construct artifact creature until end of turn.

More or Less

Add or subtract 1 or one from a number or number word on target spell or permanent until end of turn.

Selfie Preservation

Search your library for a basic land card and reveal it. If there’s a tree in its art, put it onto the battlefield tapped. Otherwise, put it into your hand. Then shuffle.

Everythingamajig

, : Draw a card. Activate only if you have no cards in hand.
, : You gain 10 life.
, , Sacrifice Everythingamajig: You may put a silver-bordered or acorn permanent card from your hand onto the battlefield.

Everythingamajig

, : Scry 2.
, , Pay 1 life: Create a 0/1 white Goat creature token.
, , Sacrifice Everythingamajig: Choose target player. At the beginning of the next end step, exchange life totals with that player, exchange control of all permanents you and that player control, and exchange cards in your hands, cards in your libraries, and cards in your graveyards.

Suspicious Nanny

Whenever Suspicious Nanny deals combat damage to a player, it reassembles target Contraption that player controls. (Gain control of it and move it onto one of your sprockets.)

Everythingamajig

: Add one mana of any color.
, : Say the flavor text on a card in your hand. Target opponent guesses that card’s name. You may reveal that card. If you do and your opponent guessed wrong, draw a card.
, : Everythingamajig deals 12 damage to target creature.

Everythingamajig

, : Move a counter from one permanent onto another. If the second permanent refers to any kind of counter, the moved counter becomes one of those counters. Otherwise, it becomes a +1/+1 counter.
, : Put a +1/+1 counter on target creature.
, : Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Border Guardian

Whenever you cast a silver-bordered spell, put a +1/+1 counter on Border Guardian.
Whenever you cast a black-bordered spell, Border Guardian can’t be blocked this turn.
Whenever you cast a white-bordered spell, Border Guardian gains double strike until end of turn.

Shapers of Nature

: Put a +1/+1 counter on target creature.
, Remove a +1/+1 counter from a creature you control: Draw a card.

Jade Guardian

Hexproof (This creature can’t be the target of spells or abilities your opponents control.)
When Jade Guardian enters, put a +1/+1 counter on target Merfolk you control.