Armsmaster, PRT Leader

Tinker 2
When Armsmaster enters the battlefield, create a legendary equipment artifact called "Halberd
Weapons System".
Remove X Tinker counters from Armsmaster:
Remove all counters from the Halberd and then
add X in any combination of +1/+1, first strike,
vigilance and reach counters.
"I'm inclined towards tunnel vision."