Teodor, the last ashy

When Ashen creature enters the battlefield,
put Ash counter on Teodor, the last ashy.
{b/r} {b/r}: Put Ash counter on Teodor, the last ashy.
{t},{4}: Destroy target creature, create
1/1 Ashen Knight creature token with X +1/+1 counters on it, where X is the number of Ash counters on Teodor, the last ashy.