Talk:Iowa/@comment-26481814-20160603051142/@comment-24930367-20160603055807

Starts at 0.240% rate, then at the 240th S-rank on the node that (supposedly) drops Iowa, the chance will become 2.40% for the next 240 seconds before plummeting into 0.240% again.

She will give 2.40x higher drop rate if you can score 240 S-rank consecutively without fail.