When this creature enters, you may search your library for a basic Plains card, reveal it, put it into your hand, then shuffle.
Coven — : Transform this creature. Activate only if you control three or more creatures with different powers.

Ward
Whenever this creature attacks, put three stun counters on it and draw three cards.
Whenever you cast a Turtle spell, untap this creature.

Flash
When Ambrosia Whiteheart enters, you may return another permanent you control to its owner's hand.
Landfall — Whenever a land you control enters, Ambrosia Whiteheart gets +1/+0 until end of turn.

When this creature enters, you may pay 2 life. When you do, target creature gets -1/-1 until end of turn.

Artifact creatures you control have ": Add . Spend this mana only to cast an artifact spell or activate an ability of an artifact source."

Target creature you control gets +1/+0 until end of turn. It deals damage equal to its power to target creature an opponent controls.

Whenever this creature or another creature you control enters, that creature gets +2/+2 until end of turn.
Dash

Blocking creatures gain first strike until end of turn.

Forests you control are 1/1 green Elf creatures that are still lands.
, Sacrifice an Elf: Target creature gets +3/+3 until end of turn.

Flash
When this creature enters, target creature an opponent controls gets -2/-2 until end of turn.

Trample
When this creature enters, return another creature you control to its owner's hand.

Flash
Flying
: Creatures you control get +1/+1 until end of turn.

First strike, haste

Flash
Deathtouch

Flash
When this creature enters, exile up to one target card from a graveyard.

When you cast this spell, copy it if you control a planeswalker, Cleric, Druid, Shaman, Warlock, or Wizard.
Scry 1, then draw a card.

Reach
Domain — When Meria's Outrider enters, it deals damage equal to the number of basic land types among lands you control to any target.

Flying, haste

Flying
Whenever you attack with one or more creatures with counters on them, draw a card.

Flying, deathtouch

Enchant artifact
When Mightstone's Animation enters, draw two cards, then discard a card.
Enchanted artifact is a creature with base power and toughness 4/4 in addition to its other types.

At the beginning of your upkeep, surveil 2.
Each enchantment card in your hand has miracle. Its miracle cost is equal to its mana cost reduced by .

Exile the top eight cards of your library. You may put a land card from among them onto the battlefield. Until end of turn, for each nonland card type, you may cast a spell of that type from among the exiled cards without paying its mana cost.

Whenever Mischievous Catgeist deals combat damage to a player, draw a card.
Disturb

, , Discard a card: Draw a card.
Whenever you discard one or more artifact cards, add . This ability triggers only once each turn.

Afflict 3
Whenever an opponent casts a spell, put a -1/-1 counter on this creature.
Whenever this creature deals combat damage to a player, remove all -1/-1 counters from it.

Target player reveals their hand and discards all nonland cards.