Whenever a creature enters, destroy all other creatures that share a color with it. They can't be regenerated.

(: Add .)

Counter target spell. At the beginning of your next main phase, add an amount of equal to that spell's mana value.

Borrowing the East Wind deals X damage to each creature with horsemanship and each player.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — This Saga gains ": Add ."
II — This Saga gains ", : Create a 0/0 colorless Construct artifact creature token with 'This token gets +1/+1 for each artifact you control.'"
III — Search your library for an artifact card with mana cost or , put it onto the battlefield, then shuffle.

: Target creature other than this creature has base power and toughness 0/2 until end of turn.

(: Add .)

Search your library for an enchantment card, reveal it, put it into your hand, then shuffle.

When this creature enters, look at the top X cards of your library, where X is your devotion to blue. Put up to one of them on top of your library and the rest on the bottom of your library in a random order. If X is greater than or equal to the number of cards in your library, you win the game. (Each in the mana costs of permanents you control counts toward your devotion to blue.)

Each land is a Swamp in addition to its other land types.

Draw two cards, then discard two cards. Untap up to three lands.

Sneak (You may cast this spell for if you also return an unblocked attacker you control to hand during the declare blockers step. He enters tapped and attacking.)
Attacking creatures you control have double strike.

This creature gets +1/+1 for each other creature on the battlefield named Relentless Rats.
A deck can have any number of cards named Relentless Rats.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
At the beginning of your upkeep, you may return target Goblin card from your graveyard to your hand.

Creatures you control get +1/+1.
Whenever you tap a land for mana, add one mana of any type that land produced.

You may choose not to untap this artifact during your untap step.
, : Exile target creature and all Auras attached to it. Note the number and kind of counters that were on that creature. When this artifact leaves the battlefield or becomes untapped, return that exiled card to the battlefield under its owner's control tapped with the noted number and kind of counters on it. If you do, return the other exiled cards to the battlefield under their owner's control attached to that permanent.

Flying
Whenever a creature you control deals combat damage to a player, create that many Treasure tokens.

Whenever another Zombie you control dies, if it didn't have decayed, create a 2/2 black Zombie creature token with decayed. (It can't block. When it attacks, sacrifice it at end of combat.)
At the beginning of your end step, you may sacrifice a Zombie. If you do, draw a card.

Whenever a creature you control dies, draw a card.
+1: Create a 2/2 black Zombie creature token.
−4: Each player sacrifices two creatures of their choice.
−9: Each opponent chooses a permanent they control of each permanent type and sacrifices the rest.

Menace
Whenever Splinter or another nontoken creature you control leaves the battlefield, create a Mutagen token.
Partner—Character select (You can have two commanders if both have this ability.)