Tennyson the Toymaker

•On your upkeep, create a 1/1 artifact dinosaur creature token
•Whenever a nontoken creature enters the battlefield under your control, create a 1/1 artifact dinosaur creature token
{r}{g}{t} for each dinosaur token you sacrifice,
deal that much damage to any target
•Sacrifice 7 dinosaur tokens: search your library for
any creature card and put it on the battlefield