Septic Rats Septic Rats band together in small, powerful groups, getting a small buff as long as the defending opponent already has one or more poison counters
If a creature token an opponent controls dies, it goes to that player's graveyard as normal before ceasing to exist
Use proxies so that ownership is not permanent and you don't need to keep track of cards (lost cards are kept in your possession, just not in your deck)
These include Glacial Dragonhunt (loot, removal), Rally the Monastery (Monk tokens, removal, pump), Channeled Dragonfire (removal), Broadside Barrage (loot, removal), Chart a Course (draw), and the massively powerful Jeskai Revelation (bounce, direct damage, creature tokens, card draw, life gain)