Percival, Storm blessed

Call lightning {1}{w}{u/r}{t}: Deal X damage to target creature or player, where X is te number of +1/+1 counters on all creatures you control.

Sea Bless : When Percival, Storm Blessed enters the battlefield you may put one +1/+1 counter on any creature you control.

Fear Eadro's wrath, an seek his's blessing -