Renee Slint, Warp Scrapper

When Renee Slint, Warp Scrapper enters the
battlefield, you may sacrifice any number of
artifacts you control. If you do, you may put
that many +1/+1 counters total on artifacts
you control.
{2}{u/r}{p/b}: Transform Renee Slint,
Warp Scrapper. Activate this ability only
as a sorcery.