To answer the latter first, the general answer is Xatu, Malmar, and Kirlia/Gallade
At only two mana, Deadbeat Attendant is an extremely efficient creature to open an Attraction with, effectively giving you two cards for the price of one by bringing an Attraction into play with it
[/spoiler] [spoiler="Shayan - The Freak Assailant"] LIGHT/****/Warrior/Effect ATK/1900 DEF/100 When this card attacks a monster: you can discard 1 card
The downside of being dead against Shops is worth it given how strong it is everywhere else
The Combo element comes from the title card, Raise the Past
These colours also have Enthusiastic Mechanaut, a way to turn one-mana artifacts into cheerios, and Third Path Iconoclast for that hint of noncreature spellslinging that makes Izzet so popular