Although it takes a little more time than with a card like Bloodbraid Elf, you stand to gain both value and tempo with Pia and Kiran Nalaar fighting for you
But for our purposes of collecting R/M, it's easier to assume they're about the same
The honest caveat for collectors is budget management
Thrumming Stone gives all of your spells ripple 4, which means when you cast a spell, you get to look at the top four cards of your library and cast all cards with the same name as the first spell cast without paying their mana cost
Still , Rebel Clash wasn't popular with players or collectors
But Final Fantasy introduced sagas that are also creatures, which could be targeted with effects like Tishana's Tidebinder, Fresh Start, or Unable to Scream (since these all affect creatures)