Infinite ETB, Infinite colorless mana, Infinite creature tokens
Activate Cayth by paying and tapping it, creating a copy of the Bounding Krasis token.
When the Bounding Krasis token enters the battlefield, it and Mana Echoes trigger.
Resolve the Bounding Krasis trigger, untapping Cayth
Resolve the Mana Echoes trigger, adding for each creature you control that shares a type with the Bounding Krasis token.
Repeat.
Component Cards
How It Works
Activate Cayth by paying and tapping it, creating a copy of the Bounding Krasis token.
When the Bounding Krasis token enters the battlefield, it and Mana Echoes trigger.
Resolve the Bounding Krasis trigger, untapping Cayth
Resolve the Mana Echoes trigger, adding for each creature you control that shares a type with the Bounding Krasis token.
Repeat.