Quote from CruxMDQWelcome to the forums, wolf
I found Boros Charm very interesting, as a way of proofing your stuff against boardwipes or one-shotting someone with your Overlord by giving it double strike in a hurry.
However, I didn't really like any one of those three better than Bant Charm. Dimir Charm may fill in for it in a hurry, but it's nowhere as useful in my book.
Boros Charm maybe userul for sliver agroo or Voltron
one can a very useful Passive Ability to avoid Wrath of God]...
and the can help your deal lots damages in a round（think about it with Sliver Legion ！）
40 life，21commander damage。。。easy
呃，combro or control。。。OK， Bant Charm its very good。。。。