This deck is built on combos inspired by izzet decks that have been floating around recently.
Combo 1: Young Pyromancer + Hidden Strings + Armed / Dangerous = 4 tokens (1 from strings, 1 from armed, 2 from cipher procs with double strike)
Next turn, overloaded
Dynacharge
= 4/1 pyromancer and five 3/1 elementals, four of which can attack
Combo 2: Young Pyromancer + Goblin Electromancer for reduced cost +
Dragonshift
= turn 6 4/4 flyers
Combo 3: Nivix Cyclops + Hidden Strings (untap the lands you used if youre short on mana) + Armed / Dangerous = 8/5 double strike, on attack, first hits for 8 damage, then gets hidden strings cipher proc and hits again for 11 damage, totalling 19 damage in one swing.
Combo 4: Nivix Cyclops + Armed / Dangerous +
Dragonshift
(while armed is on the stack) causes two procs of +3/+0, and +1/+1 double strike resolves after he becomes a dragon, making him a 11/5 flying double strike. Swing for instant win. With Goblin Electromancer, you can cast armed and dragonshift for 3 mana total.
Combo 5: Guttersnipe + Hidden Strings (untap the lands you used) + Teleportal +
Dynacharge
= 13 damage. Replace teleportal with Armed / Dangerous and you get two cipher procs for a total of 20 damage.
I can go on and on. Play the deck yourself to find all the combos.
Oh and the best part? It's Rotation-Friendly.