Kara, the Ringed Creator

Whenever you activate an ability, if it isn't a
mana ability, you may pay {1}{w/u}. If you do, put a
+1/+1 counter on Kara and copy that ability.
You may choose new targets for the copy.
{3}, {t}, Remove X +1/+1 counters from Kara:
You may pay 2 life. If you do, X is increased by
1. Search your library for an artifact card with
converted mana cost X or less and put it onto the
battlefield, then shuffle your library.