I think thats a reasonable enough rate to run this blue instant in your self-mill decks
Blue-Red Delver -2 Exhume -2 Grief -1 Dark Ritual +2 Silence Matchup: Jeskai Control Jeskai Control: Mainboard 0-2 Hullbreacher 0-2 Supreme Verdict 0-2 Days Undoing 0-2 Dress Down Jeskai Control: Sideboard 1-2 Flusterstorm How To Sideboard vs
Plagon, Lord of the Beach This three-drop mono-Blue 0/3 is our top card in the final list, and my final card from both Foundations and its Jumpstart
If you play it late, it is still helpful, and theres a lower life penalty
Now, in my opinion, if you are playing Green, you should build a bit differently, even if you are running 5 colors
This particular copy came from a former production manager at WOTC who was allowed to have his pick of the litter right off the press