Kragnos, End of Empires

Reach, hexproof, haste
When Kragnos enters the battlefield, if you
cast it, for each opponent, destroy two target
lands they control, then destroy all dragons.
When Kragnos attacks, other creatures you
control gain trample and get +X/+X until end
of turn, where X is the number of land cards
and dragon cards in all graveyards.