Maybe something like team attacks?
Like if two creatures attack an enemy minion, some kind of effect happens.
Example:
3mana 2/2: if it participates in a team attack it's health cannot go below 0. Or smt like that
Quote (DrLatBC @ 21 Apr 2015 04:32)
So like a minions like
2/1 for 3 mana lock the enemy hero power. Maybe higher mana with better stats, but that idea is cool.
I like it.