Jankyb did well in a recent MTGO legacy challenge with the list below. I might give it or something like it a spin at the next FNM.

1 Teferi, Time Raveler
4 Brazen Borrower
3 Snapcaster Mage
4 Stoneforge Mystic
1 True-Name Nemesis

4 Ponder
4 Prismatic Ending
4 Brainstorm
2 Fire // Ice
2 Flusterstorm
1 Force of Negation
4 Force of Will
4 Swords to Plowshares
1 Batterskull
1 Kaldra Compleat

4 Flooded Strand
4 Prismatic Vista
3 Scalding Tarn
4 Snow-Covered Island
1 Snow-Covered Mountain
2 Snow-Covered Plains
1 Tundra
1 Volcanic Island

Sideboard (15)
1 Force of Negation
2 Ethersworn Canonist
2 Meltdown
2 Pyroblast
2 Red Elemental Blast
2 Rest in Peace
2 Ruination
2 Surgical Extraction