Dimir-Golgari Combo with Abhorrent Oculus for Pioneer

Abhorrent Oculus can create a large number of creatures with its ability to sacrifice creatures for a card draw, while Valgavoth benefits from a high creature count by being a powerful threat that can be cast effectively and potentially buffed with the creatures generated from Oculus.

Thoughtseize allows you to remove key threats from your opponent's hand early, while Mind Rot capitalizes on their reduced hand size, forcing them to discard additional cards. This combination significantly disrupts your opponent's strategy.

Diabolic Tutor allows you to search for any card you need, including powerful draw spells like Opportunity, which lets you refill your hand. This synergy ensures you maintain card advantage and find key pieces for your strategy.

Llanowar Elves provides early ramp to accelerate your mana production, enabling you to cast Cultivate earlier and search for additional lands to ensure you have a strong mana base for subsequent turns.

Having access to multiple shock lands like Overgrown Tomb, Watery Grave, and Breeding Pool provides flexible mana for a three-color deck. This enables you to cast both green ramp spells and blue card draw spells effectively, enhancing your overall strategy.