Defender (This creature can't attack.)
Whenever you discard a card, you may sacrifice this creature. If you do, return the discarded card from your graveyard to your hand.

Other Elves you control get +1/+1.
, : Create a 1/1 green Elf Warrior creature token.

When this creature enters, you may search your library for an artifact card with mana value 2, reveal that card, put it into your hand, then shuffle.

: Add one mana of any color.
, : Untap target legendary creature you control.

When this creature enters, each player sacrifices a creature or planeswalker of their choice. Each player who can't discards a card.

Enchant player
At the beginning of enchanted player's first upkeep each turn, that player gets an additional upkeep step after this step.

At the beginning of your upkeep, if you control a blue or black permanent, target creature gets +1/+1 until end of turn. If you control a blue permanent and a black permanent, that creature gets +5/+5 until end of turn instead.

Cycling (, Discard this card: Draw a card.)
When you cycle this card, you may have it deal X damage to target creature, where X is the number of Goblins on the battlefield.

You may have this creature enter as a copy of a creature you control.

First strike
Sacrifice an artifact: This creature gets +2/+0 until end of turn.

, or , : Prevent the next 2 damage that would be dealt to any target this turn.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)
Vigilance
When this creature enters, tap target creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)

Cast this spell only during the declare attackers step and only if you've been attacked this step.
Return one or two target attacking creatures to their owner's hand.

, , Sacrifice this artifact: Return all enchantment cards from your graveyard to your hand.

, Sacrifice a land: Destroy target land.

This creature gets +1/+1 as long as you control a Plains.
: Regenerate this creature.

As an additional cost to cast this spell, sacrifice an artifact.
Search your library for an artifact card, put that card onto the battlefield, then shuffle.

Return target spell or permanent with mana value 1 or greater to its owner's hand.
Learn. (You may reveal a Lesson card you own from outside the game and put it into your hand, or discard a card to draw a card.)

Target creature's controller sacrifices it, then creates X 1/1 green and white Elf Warrior creature tokens, where X is that creature's power.

Flying
Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When this creature enters, destroy target nonartifact, nonblack creature.

Equipped creature gets +3/+1.
Whenever equipped creature dies, you may reveal cards from the top of your library until you reveal a creature card that shares a creature type with it. Put that card into your hand and the rest on the bottom of your library in a random order.
Equip

Flash (You may cast this spell any time you could cast an instant.)
When this creature enters, you may tap or untap target creature.

All Sliver creatures have trample.

Whenever another Goblin you control is put into a graveyard from the battlefield, you may have this enchantment deal 1 damage to target player or planeswalker.

: Add .

Bloodrush — , Discard this card: Target attacking creature gets +3/+1 until end of turn.
Whenever one or more creatures you control deal combat damage to a player, if this card is in your graveyard, you may pay . If you do, return this card to your hand.

Landfall — Whenever a land you control enters, create a Food token or a Treasure token. (Food is an artifact with ", , Sacrifice this token: You gain 3 life." Treasure is an artifact with ", Sacrifice this token: Add one mana of any color.")

Counter target spell unless its controller pays for each card in your graveyard.
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Whenever a Saproling you control dies, Slimefoot deals 1 damage to each opponent and you gain 1 life.
: Create a 1/1 green Saproling creature token.

Flying
Whenever this creature attacks or blocks, scry 2.

Flash
When this creature enters, return a green or white creature you control to its owner's hand.

: Until end of turn, target nonartifact creature gets +1/+0 and becomes an artifact in addition to its other types.

You may discard a Plains card rather than pay this spell's mana cost.
Destroy target artifact or enchantment.

Target player discards two cards. Then exile that player's graveyard.

, Sacrifice a creature: Target player reveals cards from the top of their library until they reveal a land card, then puts those cards into their graveyard.