Hatchery Sliver | Shield Sphere | Rukarumel, Biologist

Cards

Cast
Shield Sphere by paying ({0} magic symbol) , and choosing to pay its replicate cost an arbitrarily large number of times by paying ({0} magic symbol) .
Shield Sphere triggers, creating a copy of it for each time its replicate cost was paid.
Resolve all
Shield Sphere spells, causing the nontoken
Shield Sphere to enter the battlefield, and creating a token copy of it for each time its replicate cost was paid.