wiggly wurm

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
(I) create X 0/1 tapeworms that have " when
this creature becomes blocked infect blocking creature with -1/-1 counters"
(II) all tapeworms you control gain +X/+X and trample until end of turn
(III) Tapeworms you control give you that many infect counters and die as the saga leaves