This means that the focus is on fast, aggressive creatures and burn spells
-Lennon-McCartney, recorded by The Beatles Hey, just be happy I chose this over Gnomeo & Juliet references
The counter doublers you looked at before will be fantastic here
EDH decks with lots of Artifacts, like decks featuring Urza, Lord High Artificer, make good use of the card too
This one costs five mana instead of four and doesn't include a way to cast it for free, but if you're looking for a type manipulator in Black, this is one of your best options
The strict requirements for fighting with Boxing Ring help keep it from feeling oppressive, but the effect is still likely to trigger several times during the average Commander game