First strike
Whenever this creature deals combat damage to a player, create a 1/1 white Soldier creature token.

Flying, first strike, trample
Once each turn, while you're searching your library, you may pay , reveal this card from your library and say "I'm coming, too" If you do, this card deals 2 damage to a player of your choice.

Menace
When this creature enters, search your library for a card with mana value less than or equal to your devotion to black, reveal it, put it into your hand, then shuffle. You lose 3 life. (Each in the mana costs of permanents you control counts toward your devotion to black.)

: This creature becomes a Kithkin Spirit with base power and toughness 2/2.
: If this creature is a Spirit, it becomes a Kithkin Spirit Warrior with base power and toughness 4/4.
: If this creature is a Warrior, it becomes a Kithkin Spirit Warrior Avatar with base power and toughness 8/8, flying, and first strike.

Flying
When this creature enters, you gain 1 life for each other creature you control.

First strike
Whenever this creature deals combat damage to a player, that player discards a card at random.
: Regenerate this creature.

: Regenerate this creature.

Reveal the top five cards of your library. You may put a creature or enchantment card from among them into your hand. Put the rest into your graveyard.

When Niko Aris enters, create X Shard tokens. (They're enchantments with ", Sacrifice this token: Scry 1, then draw a card.")
+1: Up to one target creature you control can't be blocked this turn. Whenever that creature deals damage this turn, return it to its owner's hand.
−1: Niko Aris deals 2 damage to target tapped creature for each card you've drawn this turn.
−1: Create a Shard token.

Dredge 3 (If you would draw a card, you may mill three cards instead. If you do, return this card from your graveyard to your hand.)

Repartee — Whenever you cast an instant or sorcery spell that targets a creature, this creature gains flying until end of turn. Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Indestructible (Effects that say "destroy" don't destroy this artifact.)
: Add one mana of any color.

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.)
For each player, you choose a creature that player controls. Then each player sacrifices all other creatures they control that don't share a creature type with the chosen creature they control.

Flying
Whenever a land an opponent controls enters, you may gain 3 life.

As this creature enters, choose odd or even. (Zero is even.)
This creature has protection from each mana value of the chosen quality.

Trample
: Until end of turn, target creature you control has base power and toughness 5/5 and gains trample.

Untap up to two target creatures. They each get +2/+2 until end of turn.

Whenever you cast your first spell each turn, reveal the top card of your library. You may cast it without paying its mana cost if it's a spell with lesser mana value. If you don't cast it, put it into your hand.

Mizzium Mortars deals 4 damage to target creature you don't control.
Overload (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Choose a card type. Target opponent reveals their hand. Create two 1/1 green Saproling creature tokens for each card of the chosen type revealed this way. (Artifact, battle, creature, enchantment, instant, kindred, land, planeswalker, and sorcery are card types.)