Let's list the changes we think should be made to the set. Fluttering Butterflies (2/2 "Flying. Prevent all combat damage attacking creatures would deal to <THIS>. Whenever <THIS> blocks, lose life equal to it's power.") Change to 1BG and 2/1 as a common or uncommon? I think the added mana cost (1BG) and that it only works as a blocker may keep it common, but the 2/1 change makes it to vulnerable to Tims.