It's a 4/2 for 3. That's not bad. If it had first strike, it'd be better.
Pros: 4/2 for 3 when swinging
Cons: Vanilla 4/2 for 3, only 4/2 when swinging
A little underpowered cost:mana ratio-wise, but given its ability, I can forgive it. Kind of.
Pros: Exiles things it hits
Cons: 3/3 for 5
Bad. Just bad.
Pros: 4/4 for 4
Cons: Makes your stuff cost more, effectively a vanilla 4/4
Amazing blocker. Seriously, this thing is great.
Pros: Flying 1-drop that can regenerate
A conditionally unblockable 3/4 for 6? Yeah... no.
Pros: Conditionally unblockable
Cons: 3/4 for 6
Complete waste of paper and ink.
Pros: Scalable lifegain
Cons: 4 for first 3 life, sorcery speed