The Legend of Kuruk // Avatar Kuruk | Baboon Spirit | Spark Double

Cards

All permanents on the battlefield (
The Legend of Kuruk // Avatar Kuruk as
Avatar Kuruk and
Spark Double as a copy of
Avatar Kuruk).

({3} magic symbol) ({U} magic symbol) plus ({20} magic symbol) minus ({1} magic symbol) for each creature and artifact you control each turn available.

Activate
Spark Double using
Avatar Kuruk's ability by paying ({20} magic symbol) minus ({1} magic symbol) for each creature and/or artifact you can tap while activating it, causing you to take an extra turn after this one.
Activate
Baboon Spirit by paying ({3} magic symbol) ({U} magic symbol) , exiling
Spark Double.
At the beginning of your end step,
Baboon Spirit triggers, returning
Spark Double from exile to the battlefield. Choose to have it enter the battlefield as a copy of
Avatar Kuruk.
Repeat each turn.