Mashup of Pressure Wave and Perimeter Captain.

This could get quite oppressive, but only if you load your deck up with defenders. I hope a defender deck is sufficiently non-competitive it can absorb the extra boost, especially since each creature can still only neutralise one opposing creature, just bigger ones.

It probably should be "tap another untapped creature with defender you control" so it doesn't have pseudoskillhaste, but I don't like it because it loses the connection to the original captain. Suggestions?