it's really all about the Shadowy Spellbind ability
You could make the point that Secret Lair is one MTG big expansion and the shooting star is the set symbol
No matter the incarnation of the spell, the structure is the same: you get a bonus for casting an instant or sorcery, and if you spend five or more mana you get an even bigger bonus
Surrak and Goreclaw Surrak and Goreclaw works both with big creatures and big mana commanders, and it spreads around an important keyword for getting aggressive decks over the hump: trample
As for gold cards, Kaya, Orzhov Usurper is also pretty appealing
Brawl Not Legal Vintage Legal Timeless Not Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Legal Toolbox Buy This Card Notes and Rules Information for Fractured Sanity: Some cards with cycling have an ability that triggers when you cycle them, and some cards have an ability that triggers whenever you cycle any card