Remmy, the Urination

Toxic 1
Other Rats you control have toxic 1.
When Karumonix enters the battlefield, look at the top five cards of your library. You may reveal any number of Rat cards from among them and put the revealed cards into your hand. Put the rest on the bottom of your library in a random order.
Handpicked by the Mother of Machines herself, he spreads Completion through piss.