It is a nice added touch that all of the destined party share the same colors so you can include all of them in one commander deck
City on Fire has convoke and says if a source you control would deal damage to a permanent or player, it deals triple that damage instead. This pairs very well with Karlachs abilities as first strike with triple damage will likely clear most blockers
Booster packs feel generous, with 16 cards in each one and both a Leader and Base per pack too
For each Digimon deleted by this effect, gain 1 memory
Party Thrasher Party Thrasher gives you another way to exploit the impulse draw effect in red (exile the top card, and you can play it later)
The backside, The Grand Evolution, puts creatures from your graveyard into play, distributes some +1/+1 counters, and lets your creatures fight others for just mana