Thrasio Tymna Breakfast Hulk Doomsday $500 or less

Basically you play all the most efficient combos possible. This deck is built with a budget in mind, but still functions really well. My demonic tutor is in another deck.

Some combos:
Isochron scepter+dramatic reversal with mana on board, gives infinite mana and draw your deck with thrasio.
Leonin-relic warden + animate dead
And saffi eriksdotter + karmic guide gives you infinite sacrifices and a kill with zulaport.
Doomsday pile is

1. Gitaxia probe
2. Predict
3. Laboratory maniac
4. Ponder
5. Reanimate
   Cast the probe for 2 life. Then predict for 1u naming lab man, mill the lab man and draw reanimate and ponder. Then you reanimate lab man for a b, then ponder for the win for u. Total cost 5 life, 1UUB

Cephalid illusionist + nomads en-kor / lightning greaves (needs a second creature) lets you mill your deck.
Then narcomoeba comes out, pay a u to pull out fatestitcher if needed and tap the stitched to recycle the mana. Then sacrifice 3 creatures for dread return to either grab laboratory maniac, then flashback deep analysis.
OR
Pull back necrotic ooze. Use wall of roots ability to get a g, use that to pay 1 for blighted bat to gain haste. Tap for a g using devoted druid, untap for a -1/-1 counter. Remove the counter using channeler and gain any color. Use these 2 abilities to gain infinite mana. Then se your infinite mana to kill off walking ballista.
Protean hulk + flash grabs cephalid illusionist, hapless researcher, laboratory maniac and nomad en-kor. Then you mill your deck and win by flashing back deep analysis and responding to answers with hapless researcher.
Alternately you can hulk for karmic guide and viscera seer / carrion feeder. Then pull back hulk with karmic guide, sac the hulk for saffi eriksdotter, zulapport cutthroat, and win by looping saffi and karmic guide