Kekta, The Eternal Roil

Defender, Reach, Indestructible
Kekta, The Eternal Roil enters the battlefield with X +1/+1 counters on it.
{x}, {t}, Remove X +1/+1 counters from Kekta:
Put target nonland permanent with converted mana cost X or less on the bottom of its owner's library.
{x}{x}{x}, {t}: Put X +1/+1 counters on Kekta.