Oa'thon, Realm Lasher

Reach, trample
At the beginning of each combat, untap target
basic land. It becomes a 4/4 Elemental creature
until end of turn. It's still a land. If you don't
control the targeted land, gain control of it until
end of turn.
If you control three or more land creatures,
land creatures you control have double strike.
There are times the land can be coaxed. Now, it must
be throttled awake.