Dwalin, Dwarven Beserker

Whenever Dwalin, Dwarven Beserker attacks, it
gains +5/+2 and Double Strike until end of turn.
Trample
Balin : Ohhh! Evening, brother.
Dwalin : By my beard, you're shorter and wider than
last time we met.
Balin : Wider, not shorter. But sharp enough for the
both of us.