Thieen, The Two Made One

Split Second, Trample, Reach & Loyalty 2
Behest {2}{p/g}{p/g}{t} Destroy target artifact or enchantment with a mana cost 4 or more.
If both Commanders are out this ability
costs {1} less and you also gain 4 life.
"The multiverse requires correction...
That's where 'we' come in"