Vexo, exploding power

hexproof, trample, lifelink and indestructible
during your upkeep roll a six sided die.
remove a +1/+1 counter from Vexo : create
a 2/2 knight creature token.
whenever a player rolls a die, put +1/+1 counters on Vexo equal to the number
rolled.
creatures you control have haste.