Behemoth

Trample, Protection from creatures with
power 3 or less
At the beginning of you upkeep remove all
counters from behemoth, then put a +1/+1
counter on behemoth
Whenever Behemoth attacks you may exert it, if
you do untap all machines you control except behemoth. After this phase, there is an additional combat
{t}, remove a +1/+1 counter from behemoth:
Tap and Exert target creature