Toamoraeg, Thunder Caster

Flying, Trample
At the beginning of your upkeep, each player
loses life equal to the number of dragons you
control. Then shuffle X cards from your
graveyard into your library, where X is half the
amount of life lost this way
{3}{w}{u}{u}, Tap target creature, Target tapped creature deals damage to another target creature
equal to it's power.