Tyvar Windrider, Still Mind

When Tyvar Windrider enters the battlefield, roll
a d20. He gains X Ki counters where X is the total.

Haste, First Strike

Whenever Tyvar attacks, choose one or more.
•Spend a Ki counter, tap target creature. It
does not untap during that players next untap step.
•Spend a Ki counter, Tyvar gets +1/+0 for each
Ki counter on him.