There isnt a ton of development space left to explore with this mechanic, and the cards we have now are reasonable
And since GameStop has now defined the floor on the anniversary TCG set, other card shops are inflating their own Pokmon pre-order costs accordingly
The concept is quite similar in Constructed formats, but following the advice of MTG player and mathematician Frank Karsten, the optimal range for adding another color to your deck in a 60-card format is approximately 12 to 13 sources of mana per color
(1) Ritual Summon 1 Nephthys Ritual Monster from your hand, by Tributing monsters from your hand and/or field whose total Levels equal or exceed the Level of the monster you Ritual Summon, then, if you Tributed Avatar of Nephthys and/or Sacred Blue Phoenix of Nephthys for this Ritual Summon, you can destroy 1 card on the field
If you do it once per turn rotation around the table, then its pretty meh