AZIR, Limits Broken

When I attack, you may pay {x}{r} and create X
number of ({r}) 1/1 "Sand Soldier" tokens with
Myriad and Vanishing 1 tapped and attacking,
where X is equal to the number of attacking creatures.
When I attack, you may pay {x}{r} and create X
number of ({r}) 6/1 "Sandstone Charger" tokens
with Trample and Vanishing 1 tapped and
attacking, where X is equal to the number of
"Sand Soldiers".