Dehya, Lone Lion of the Desert

Double Strike, Onslaught - (If a creature Dehya
damaged during the first instance of Double strike
damage dies, the second instance of damage is dealt
to your opponent as though Dehya was not blocked)

Whenever a creature dies, Dehya gets +1/+0 until
end of turn.

Dehya has indestructible as long as you are attacking
and/or you have lost life this turn.