Asinine Antics Four mana (or 6 if its cast with flash) to make all creatures into 1/1s isnt a bad deal
Including some of the top colorless cards MTG players utilize for utility can also help smooth out your mana production or provide generic answers that your specific colors might lack
When they try to attack, though, Mirror Force will destroy all of their hard work
If that creature has been on the battlefield since the beginning of your turn, even as an Aura, it is unaffected by summoning sickness and can tap and activate tap abilities
The Breed Lethality deck is particularly good since it introduces the Phyrexian Angel Atraxa, with her original card, Atraxa, Praetors Voice
Finishers/ Surprise /Alternate win conditions Herald of Secret Streams make creatures with +1/+1 counters unblockable and is a great card for any blue +1/+1 counter deck