E. Coli

Enters the battlefield with an exonuclease gene
token and a mismatch repair gene token.
If an additional copy of a gene attached to E. Coli
is attached to it, sacrifice one of them.
Whenever a gene is attached to E. Coli, put a
genome counter on it.
Cell cycle 4
All genes you control have {t}: Express this gene
If an E. Coli gene is destroyed, create a token copy
of the destroyed gene and attach it to E. Coli.