Virelian, Sky Lord

at the begining of your upkeep put a 1/1 counter on Virelian, Sky Lord, then put a 1/1 dragon creature on the battlefield for each 1/1 counter on Virelian, Sky Lord.
{5}: put 1/1 counters on Virelian, Sky Lord equal to half your dragons rounded up, prevent all damage opponents would take this turn
{5}: destroy target tapped creature
{5}: put a 1/1 counter on all creatures you control