Legentary Creature - Incarnation
Cumulative Upkeep - remove half of swarm counters on Swarm Master rounded up.
Swarm Master comes into play with four swarm counters.
At end of your turn put an 1 swarm counter on Swarm Master. These counters can't be removed while Swarm Master is putted into graveyard.
As long as Swarm Master is in your graveyard, at end of your upkeep put an X 1/1 Insect tokens where X is number of swarm counters on Swarm Master.
or Pay 1 life : Put an swarm counter on Swarm Master.