Tilbar, The Infinite Tail

Flying, haste
— Lesser Territory (As long as you have more life
than each opponent,whenever Tilbar enters the
battlefield, exile a plain/mountain and establish
Tilbar's territory for as long as the condition is met.
You may only have one territory established at a time.)
Whenever Tilbar dies or is exiled, if it has a
territory established, create two 4/4 non
legendary copies of it without the territory
ability. Exile them when it ends.