On the first occasion, Fiery Temper was awesome, and really helped push Madness to the top of the Standard Heap o' Decks
I believe you allude to this a bit in your archetype articles comparing powered vs unpowered
See the video of the unboxing of this exact booster pack on our YouTube channel here: Buying packs from a factory sealed booster box is the best chance of pulling a holofoil as theres an average of 12 per box, thats one in every 3 packs
Seasons Past: definitely reads mythic, and in a deck with good graveyard seeding and a well-designed mana curve, you should be able to get a full hand of cards out of your graveyard
Teferi, Time Raveler Teferi, Time Raveler as bounce with value really blanked quite a few opposing strategies in War of the Spark era Standard, and that static ability still serves as a check not only on instant speed interaction but on cascade and storm strategies, which is where this card matters for Commander
There are so many incredible Red cards in MTG as a whole, and Commander gets access to the vast majority of them