The synergies in this newest version are amazing!
1. Game Developer adds its power to all pieces with 0 base power, then basically gains 1 power each turn. I had three to four of these.
2. Crimson Terror marks Beasts for destruction, absorbing their bonus power.
3. Sheep are Beasts that have 0 base power, but have a chance to multiply.
4. Darrrrrrr and Aegis protect Beasts.
I had a Crimson Terror with over 1,000 power. I one-shot Boss 12 with the Mayday.
I also had the Thief, which stole base power from my pieces and made them viable targets for the Game Developers.
Aegis + Secret Chest was also a very lucky combo, where the Aegis protected the chest multiple times in a row, allowing me to get several rares.
Note: If you have an Extra Life, do NOT take Recycler, or it WILL eat the Extra Life (which is an Item).