Yidris Spellslinger (EDH / Commander)

In the early game, the focus is on finding permanent based mana such as mana rocks, dorks and lands. A good opening hand usually contains around two lands. You also want to have at least one payoff spell in your hand, or a way to tutor up that payoff spell. Make sure you can either protect your payoff spell or can fall back to another strategy at all times. The following list contains payoff spells and the recommended turns to play these cards. If you can play these cards even earlier than the recommended turn then it's even better. Try to balance casting early with protection.

Turn one: Mystic Remora
Turn two: Wheel of Fortune, Windfall, or Rhystic Study
Turn three: Yidris, Maelstrom Wielder or Necropotence
Turn four: Ad Nauseam, Song of Creation
Some alternative hands:

A hand that allows you to cast your wincon as well as a way to remove your library around turn four. Often, these hands cannot be protected and are very risky to keep. The fact you have it in your hand doesn't mean you should also directly play it on turn four.
A hand that contains mostly reactive spells. Do this only if all other decks are faster than you.
A hand that contains a few filter and draw spells. Generally it's better to mulligan this, but this can be kept when you've already taken a mulligan a few times.
As a general guideline, don't play Demonic Consultation too early. You need enough mana to play out your wincon and extra mana to play interaction. Demonic Consultation could exile too many cards.

The order in which to look for specific combos or synergies is described below. Using Yidris is described at the bottom, not because this is the worst strategy, but because it's a strategy that enhances the other strategies. At the very worst, going for this early will bait a piece of interaction. You can safely do this if you can't win with your current hand and don't need to hold up interaction that round.

One of the easiest ways to assemble both pieces of the combo is by finding an Ad Nauseam or a Necropotence. This allows you to draw so many cards that you can find all the fast mana, the wincon and a way to remove your deck in one go. Ad Nauseam is significantly better, especially because of the low cmc of the deck. The best moment to cast this is the end step before your turn but the deck can often still win off of a main phase cast. There is no clear amount of life to pay with Necropotence. Try to calculate the odds of drawing a win by dividing the amount of cards in your deck by the types of cards that have an effect you need. Some decks also play necropotence as a way to fill your hand every turn, but this is generally not recommended. The deck plays little other cards that cost life, unless they're really good, as this negatively impacts the main gameplan.

Use your wheels, tutors and draw spells to find both pieces of your combo and then play them out. Casting many spells in a single turn and possibly either starting with a Song of Creation or following up with a Mind's Desire. Make sure you don't permanently lose access to either Thassa's Oracle or Jace, Wielder of Mysteries, as you have no good alternative ways to win. That doesn't mean you should be scared wheeling them away, since you have Regrowth, Noxious Revival, Yawgmoth's Will and Underworld Breach to get them back. In that case, be on the lookout for graveyard hate.

Underworld Breach synergizes incredibly well with wheels and rituals. If you have a ritual that provides you with enough mana to (re)cast a wheel and the ritual you can cycle through your deck, eventually finishing the game with a Jace or oracle. Using Lion's Eye Diamond with Wheel of Fortune also works, although your opponents can draw into interaction. High Tide or Utopia Sprawl with Frantic Search also fuel your graveyard while gaining you mana in the meantime, often finding enough spells to continue the combo.

When tutoring for a game winning card it's generally better to go for Thassa's Oracle rather than Jace, Wielder of Mysteries, as the oracle is two mana cheaper and is harder to interact with.

It is better to not exile your whole library with Demonic Consultation and Tainted Pact. Both Thassa's Oracle and Jace, Wielder of Mysteries can with with a few cards still left in your library. This is only relevant if one of the last cards in your deck can help you win this turn, or help you go for it again the next turn. Too many people shortcut to exiling the whole library only to be blown out by one piece of interaction. Not exiling everything with Demonic Consultation is only possible if you know the bottom card(s), for example through scry or Yidris. You will be slightly weaker to cards like Noxious Revival if you leave exactly enough cards in your deck. You're also weaker to removal if you count on having devotion for Thassa's Oracle.