Ritual Stuff

Communion of the Primordials
SPELL
Continuous Spell
When a monster is Ritual Summoned successfully to your side of the field, draw cards until you have 4 cards in your hand.

Ritual Summons take a lot of hand advantage, this will help you back yourself up and regain lost advantage.

Devoted Acolyte
DARK
Level 3
1100/1100
[Spellcaster/Effect] You can reveal 1 Ritual Monster in your hand to Special Summon this card from your hand. When this card is used as a Tribute for the Ritual Summon of a Ritual Monster, it's original Level is treated as 8.

Reducing the amount of monsters needed for a Ritual Summon is helpful as well.

Lunarpact Ceremonial Prophet
FIRE
Level 4
350/250
[Spellcaster/Effect]
Once per turn, you can discard 1 card to add 1 card from your deck to your hand which has "Ritual" in it's effect text. When this card is used as a Tribute for the Ritual Summon of a Ritual Monster, draw 1 card.

A very fragile searcher, but capable of acquiring many different cards needed for Ritual Summoning.

Ojancanu, Elder of Annihilation
FIRE
Level 9
3500/3200
[Beast-Warrior/Ritual/Effect] This card can only be Ritual Summoned by the Ritual Spell Card "Departure to Ruin". While this card is face-up, halve the ATK and DEF of all other face-up Monsters on the field. This card is unaffected by the effect(s) of monsters whose ATK is below 1000.

Another Elder of Annihilation monster, simply put. It's like the Wicked Dreadroot.