An interesting UR list with standstill made top 8 at a relatively big tournament recently.
// Deck file for Magic Workstation created with mtgtop8.com
// NAME : UR Delver
// CREATOR : Ivan Siska
// FORMAT : Legacy
1 Scalding Tarn
2 Island
2 Polluted Delta
3 Flooded Strand
4 Mishra's Factory
4 Volcanic Island
4 Wasteland
2 True-Name Nemesis
3 Grim Lavamancer
4 Delver of Secrets
4 Standstill
2 Dismember
3 Daze
3 Spell Pierce
3 Spell Snare
4 Brainstorm
4 Force of Will
4 Lightning Bolt
4 Stifle
SB: 3 Pyroblast
SB: 2 Grafdigger's Cage
SB: 2 Pyroclasm
SB: 1 Surgical Extraction
SB: 1 Umezawa's Jitte
SB: 2 Pithing Needle
SB: 2 Hydroblast
SB: 2 Submerge

