The Legend of Kuruk // Avatar Kuruk | Teleportation Circle | 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).

({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.
At the beginning of your end step,
Teleportation Circle triggers, blinking
Spark Double. Choose to have it enter the battlefield as a copy of
Avatar Kuruk.
Repeat each turn.