Jin-Kenrai, Lightning Sworn

Haste, Vigilance, First Strike
Whenever one or more counters would be put on
a creature you control you may instead put that
many thunder counters on that creature
Creatures with one or more thunder counters on
them have "Remove a thunder counter from this creature: this creature gains Double Strike until
the end of the turn"
{r}{r}: Put a +1/+1 counter on target creature