Durant, the Steel Shell

Partner with Heatmor, the Armor Melter
Trample, Reach, Steel Shell (Creatures you control
can not have their toughness effected by minus counters)
{8} Guillotine (Flip a coin, if heads Destroy target creature, if tails nothing happens)
Individuals each play different roles in driving Heatmor, their natural predator, away from their colony.