I'm having ideas again. Go me, I guess.
Rainbow Beast Red Dragon
ATK 1800 DEF 700 Level 4 FIRE
Dragon/Effect
This card is treated as a 'Crystal Beast' card, except when it is in the Deck. Once per turn: You can place 1 'Crystal Beast' monster in your Spell/Trap Card Zone, as a Continuous Spell Card. During the End Phase, send all cards placed on the field by this effect to the Graveyard. When this card is in the Graveyard: You can discard 1 card; place this card face-up in your Spell/Trap Card Zone as a Continuous Spell Card. If you do this, when this card leaves the field: Banish it.
Rainbow Beast Orange Ape
ATK 1700 DEF 1500 Level 4 EARTH
Beast/Effect
This card is treated as a 'Crystal Beast' card, except when it is in the Deck. Once per turn: You can have all 'Crystal Beast' monsters you control gain 200 ATK for each Continuous Spell Card you control, until the End Phase. When this card is in the Graveyard: You can discard 1 card; place this card face-up in your Spell/Trap Card Zone as a Continuous Spell Card. If you do this, when this card leaves the field: Banish it.
Rainbow Beast Yellow Mouse
ATK 500 DEF 100 Level 3 LIGHT
Beast/Effect
This card is treated as a 'Crystal Beast' card, except when it is in the Deck. When this card is destroyed by battle, you can place this card in your Spell/Trap Card Zone as a Continuous Spell Card. Then, you can Special Summon 1 Level 3 'Crystal Beast' monster, or 'Rainbow Beast Yellow Mouse' from your Deck. When this card is in the Graveyard: You can discard 1 card; place this card face-up in your Spell/Trap Card Zone as a Continuous Spell Card. If you do this, when this card leaves the field: Banish it.
Rainbow Beast Green Parrot
ATK 1200 DEF 1000 Level 3 WIND
Winged Beast/Effect
This card is treated as a 'Crystal Beast' card, except when it is in the Deck. Once per turn: You can target 1 Continuous Spell Card you control, and 1 card your opponent controls; return those targets to the owner's hands. When this card is in the Graveyard: You can discard 1 card; place this card face-up in your Spell/Trap Card Zone as a Continuous Spell Card. If you do this, when this card leaves the field: Banish it.
Rainbow Beast Blue Badger
ATK 1600 DEF 1400 Level 4 EARTH
Beast/Effect
This card is treated as a 'Crystal Beast' card, except when it is in the Deck. Destroy any monster that battles a 'Crystal Beast' monster, at the end of the Damage Step. When this card is in the Graveyard: You can discard 1 card; place this card face-up in your Spell/Trap Card Zone as a Continuous Spell Card. If you do this, when this card leaves the field: Banish it.
Rainbow Beast Indigo Beetle
ATK 1700 DEF 1000 Level 4 LIGHT
Insect/Effect
This card is treated as a 'Crystal Beast' card, except when it is in the Deck. You can Tribute this face-up card; Draw 1 card. If it is a 'Crystal Beast' card: You can reveal it, then place it in your Spell/Trap Card as a Continuous Spell Card. After that, draw 1 more card. When this card is in the Graveyard: You can discard 1 card; place this card face-up in your Spell/Trap Card Zone as a Continuous Spell Card. If you do this, when this card leaves the field: Banish it.
Rainbow Beast Violet Viper
ATK 500 DEF 2000 Level 3 DARK
Reptile/Effect
This card is treated as a 'Crystal Beast' card, except when it is in the Deck. You can place this card face-down in your Spell/Trap Card Zone (from your hand). If you do this: When a Spell Card, Trap Card, or the effect of a Spell/Trap/Effect Monster Card activates; flip this card face-up and negate the activation. When this card is in the Graveyard: You can discard 1 card; place this card face-up in your Spell/Trap Card Zone as a Continuous Spell Card. If you do this, when this card leaves the field: Banish it.