[Pauper] UR "Wee" Friends

Got a pauper win-a-box next weekend, and figured since I'd played this deck a bunch on MTGO that I'd get the cards for it and compete. Will point out it's paper Pauper, so the only real difference between it and MTGO pauper is the addition of Hymn to Tourach which imo makes mono black way too strong but f*** it, I'll just accept it was already a tough matchup anyway. Also this list is a little different to my online list. Well, by that I mean I actually have Pyroblasts irl since they're 1/7 of the price of Pyroblasts online.


Creatures:
4 Delver of Secrets
4 Kiln Fiend
4 Nivix Cyclops

Sorceries:
4 Gitaxian Probe
4 Ponder
4 Preordain
4 Assault Strobe
3 Artful Dodge

Instants:
4 Lightning Bolt
3 Apostle's Blessing
2 Shadow Rift
1 Mutagenic Growth

Lands:
10 Island
6 Mountain
3 Izzet Guildgate


Sideboard:
4 Pyroblast
3 Dispel
2 Flaring Pain
2 Flame Slash
2 Echoing Ruin
2 Mutagenic Growth