Angry low mana cost unblockable double-striked Wizard deck.
The idea is to know what your next few moves are, with scry and Augur of Bolas. Everything else is unblockable, hexproof or benefits from multiple spells, specifically instants or sorceries. Big damage they can't do anything about.
Fists of the Anvil, Titan's Strength and Brute Force buffs.
Assault strobe gives double strike. In combination with Quicken, Assault Strobe becomes a flashed sorcery double strike on a creature.
Every second spell, Incursion Specialist becomes a 3/3 unblockable.
Kiln Fiend gets +3/+0 every instant or sorcery spell.
Invisible Stalker is a 1/1 Hexproof unblockable.
Temple of Epiphany and Aqueous Form are scry 1 cards.
Augur of Bolas is a scry 3, choose and instant or sorcery, reveal it, and put it into your hand.
Turn 3 win:
1- Play a Island.
2- Play a Mountain, play Kiln Fiend.
3- Play a Mountain, play Assault Strobe to give Kiln Fiend Double-strike, trigger Kiln Fiends ability, giving it +3/+0(4/2). If no blockers are declared post-combat step, cast Fists of the Anvil, triggering Kiln Fiends ability again, giving Kiln Fiend a total of being a 11/4 with double strike. 22 damage.
Turn 4 win:
1- Play Island
2- Play Mountain, tap both, summon Incursion Specialist.
3- Play Mountain, pass turn.
4- Play Mountain, tap 4 mountains, cast Titan's Strength/Brute Strength x3, giving Incursion Specialist +9/+3(or /+9 depending on buff), also triggering his ability giving him +2/+0 and unblockable. Total of +11 power, double strike for 22 unblockable.