Heralds, because you shouldn't be allowed to play YGO.

[Maeriberii Haan]

Herald of Faint Light
*2 Fairy/Tuner Light 300/500
If you Ritual Summon a LIGHT Fairy Ritual-Monster, you can use this card as the entire tribute. If you do, you cannot summon another monster for the rest of the turn, except Fairy-type Ritual Monsters. If this card is sent to the graveyard; add 1 Fairy-type Ritual Monster from your deck to your hand. You can only activate one of the effects of “Herald of Faint Light” per turn, and only once that turn.

Herald of Brilliant Light
*2 Fairy/Effect Light 300/500
When this card is Normal Summoned, target 1 Level 2 or lower LIGHT Fairy-type monster in your graveyard. Special Summon it to your side of the field. You can tribute this card; add 1 Ritual Spell Card from your deck to your hand. You cannot summon a monster the turn this effect is activated, except LIGHT Fairy-type monsters.

Herald of Tainted Light
*2 Fairy/Effect Light 300/500
When this card is summoned; add 1 “Herald” Spell Card from your deck to your hand. This effect of "Herald of Tainted Light" can only be activated once per turn. Once per turn, you can target any number of Level 2 or lower LIGHT Fairy-type monsters with different names in your graveyard; for each monsters targeted by this card’s effect, this card gains 2 levels and 300 ATK and 500 DEF.

Herald of Virtuous Light
*6 Fairy/Ritual/Effect Light 2400/2400
Must first be Ritual Summoned by the effect of ''Genesis of the Heralds''. When a card effect that targets a card outside the field is activated, you can discard 1 Fairy-type monster; negate the effect and if you do, destroy it. When a LIGHT Fairy-type monster is targeted for an attack, you can discard 1 Fairy-type monster; negate the attack, and if you do, destroy the attacking monster.

Altar of the Heralds
Continuous Spell Card
Once per turn, you can shuffle 1 Ritual Spell Card from your graveyard to your deck and discard 1 card; add 1 Level 2 or lower Fairy-type monster from your deck to your hand. When a card effect is negated, add 1 Level 2 or lower LIGHT Fairy-type monster from your graveyard to your hand. This effect of “Altar of the Heralds” can only be activated once per turn.

Ascension of the Heavenly Heralds
Spell Card
You can only activate this card if a Fairy-type Ritual Monster is face-up on the field. Add 2 level 2 or lower Fairy-type monster in your graveyard to your hand.

Genesis of the Heralds
Ritual Spell Card
Tribute Fairy-type monsters from your hand or your side of the field, whose total level is equal or more to a LIGHT Fairy-type Ritual Monster in your hand, and Ritual Summon it to your side of the field. If your opponent controls a monster that was summoned from the Extra Deck, you can tribute one of them for the Ritual Summon (if you tributed an Xyz monster with this card's effect, treat its Rank as its Level).

Herald of Sacred Light
*6 Fairy/Fusion/Effect 900/1500
3 Level 2 or lower Fairy-type monsters with different names
Must first be Special Summoned by shuffling the above Fusion Materials from your graveyard to the deck while “Altar of the Heralds” is face-up on the field (this is treated as a Fusion Summon). You cannot summon monsters for the rest of the turn after this card is summoned. This card gains 500 ATK and 300 DEF for each Level 2 or lower Fairy-type monsters in your graveyard with different names. When a card effect that would add a card from the deck to the hand except by drawing them is activated, you can discard 1 card; negate the activation, and destroy it. Then, if you have 3 or more different Level 2 or lower Fairy-type monsters in your graveyard; draw 1 card.

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The only reason why Sacred Light is a Fusion is since they already have Synchro, Xyz, and Ritual, so a Fusion would allow them to summon Sophia, hue.

[Toffee.]

Between Faint and Brilliant, Herlad/LIGHT Fairy Rituals in general can be quite scary. Case in point, Faint is a Gishki Vision/Ritual Raven/etc, to which lets you keep more stuff in your hand for said Rituals. Furthermore, Brilliant can also supply you with Faints, and even search for Ritual Spells in general. Tainted is nice, because it allows for Extra Deck shenanigans. Thought, it doesn't seem to contribute all that much, outside of giving you a beater and another potential 1-tribute-monster for Rituals, because it depends on how many Level 2 or lower LIGHT Fairys are in your Graveyard; This isn't necessarily a bad thing, considering it's Heralds were talking about, and they could fill it quite easily. Just, it's not as consistent as Faint and Brilliant can be.
Alter, even just the first effect of it, is amazing.
Ascension is basically Salvage, but for Heralds. So it's nice that they have a card that gives you more negations.
Sacred is interesting, and I like how it counters a rather specific, yet, rather important, aspect of the game, so it's good that a card like this exists, in the sense that it kills RotA/Gold Sarcoph/Stratos-esque monsters/etc, and as such, slows the opponent down.

So in general, you gave Heralds a lot to work with, so it's good that they can do things outside of just sitting on the Ritual monsters.

[Maeriberii Haan]

Added 2 cards, 1 Ritual Spell and 1 Ritual Monster.