As for the other half, ToppleTopple effects are underrated, especially ones that don't target and get around indestructible
In just two turns time, you can cast it for free and wipe out half your opponents permanents
I love this in the 99 of aggro decks like Boros Aggro, or goad brews that want to force attacks like the first one for triggers, or cast from exile triggers like Rakdos's Prosper, Tome-Bound or well, you can see the synergies, card flow and forced attacks this little boy can do and he drops before real counters are on line or are immune to them like Swan Song or Negate or An Offer You Can't Refuse
Doubling Season would be higher on the list, but getting your doubler effect out a turn earlier, at 4 mana, is huge for the previously mentioned cards
Once you do, though, hell bring hope a whopping three lore, sending you on your way to victory
This means that Retro Frame Zombies is now an ongoing series of Bonus cards, and not just a one-off gimmick for Festival in a Box