Relentless Rats Deck - Win by Turn 5 or 6

Hello All,
I'm new here and I love MTG Forge. Great work to everyone who contributed. I'm an old school player from the old Unlimited and Revised days. I love building decks - and here was one that I thought turned out pretty well. I can usually beat the AI by turn 5 or 6. Anyone got a deck they can recommend as a challenge to it?
Thanks.
Marty
27 Total Cards
15 Creatures
-------------
15x Relentless Rats
4 Spells
----------
4x Mox Jet
8 Land
--------
8x Swamp
I'm new here and I love MTG Forge. Great work to everyone who contributed. I'm an old school player from the old Unlimited and Revised days. I love building decks - and here was one that I thought turned out pretty well. I can usually beat the AI by turn 5 or 6. Anyone got a deck they can recommend as a challenge to it?
Thanks.
Marty
27 Total Cards
15 Creatures
-------------
15x Relentless Rats
4 Spells
----------
4x Mox Jet
8 Land
--------
8x Swamp