(: Add or .)

As Breeding Pool enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

For each opponent, choose up to one target creature that player controls, then return that creature to its owner's hand unless its controller has you draw a card.

Firemind Vessel enters the battlefield tapped.

: Add two mana of different colors.

As Heraldic Banner enters the battlefield, choose a color.

Creatures you control of the chosen color get +1/+0.

: Add one mana of the chosen color.

All Rats have fear.

, Sacrifice a Rat: Create X 1/1 black Rat creature tokens, where X is the number of Rats you control.

Spectator Seating enters the battlefield tapped unless you have two or more opponents.

: Add or .

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I — Each opponent sacrifices a creature or planeswalker.

II — Each opponent discards a card.

III — Put target creature or planeswalker card from a graveyard onto the battlefield under your control.

Thriving Grove enters the battlefield tapped.

As Thriving Grove enters the battlefield, choose a color other than green.

: Add or one mana of the chosen color.