I would use delay tactics but i don't know any that are effecent. still teleporting your self away from a swarm will cost you 6 mana and every creature in that swarm will be able to move the 2 spaces. so you have effectively lost 6 Mana and given your opponent a free quick action.
if you know some other great delay tactics I would love to hear them. even better if you open new thread about them.