When this creature enters, create a number of 1/1 green Squirrel creature tokens equal to your devotion to black. (Each in the mana costs of permanents you control counts toward your devotion to black.)

Flying
Hexproof (This creature can't be the target of spells or abilities your opponents control.)

(: Add .)

At the beginning of your first main phase, add . Spend this mana only to cast instant and sorcery spells.

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)
, Sacrifice this creature: Destroy target artifact or enchantment.

(As this Saga enters and after your draw step, add a lore counter.)
I — Return up to one target creature or planeswalker to its owner's hand.
II — Return an artifact card from your graveyard to your hand. If you can't, draw a card.
III — Exile this Saga, then return it to the battlefield transformed under your control.

Level up (: Put a level counter on this. Level up only as a sorcery.)
LEVEL 1-3
2/3
Flying
LEVEL 4+
4/4
Flying, vigilance

Put target nonland permanent into its owner's library just beneath the top X cards of that library.

, Sacrifice an artifact with mana value X: Return target artifact card with mana value less than X from your graveyard to the battlefield. It gains haste until end of turn.

This creature gets +1/+1 for each creature card in your opponents' graveyards.

Whenever you cast a Spirit or Arcane spell, you may destroy target nonbasic land.

Destroy target creature or enchantment.

Enchant nonland permanent
At the beginning of the upkeep of enchanted permanent's controller, that player sacrifices it unless they pay , where X is its mana value.

Double strike
When this creature enters, each player puts a creature card with mana value 3 or less from their graveyard onto the battlefield.
When this creature enters, sacrifice it unless was spent to cast it.

When this creature enters, sacrifice it unless you discard a creature card.

As this enchantment enters, choose an artist.
: The next time a source of your choice with art by the chosen artist would deal damage to you this turn, prevent that damage.
: Return this enchantment to its owner's hand.

Target creature gets +1/+0 and gains first strike until end of turn. If it's a Goblin or Orc, it also gains haste until end of turn.

: Exile target creature and put a +1/+1 counter on this creature.
This creature has all activated abilities of all creature cards exiled with it.

Flying
When this creature enters, target opponent loses 3 life and you gain 3 life.

: Target attacking creature gets +1/+1 until end of turn.