The cheapness of Lizard Blades is quite startling as well
The key to the original Malcolm's success is the fact that any damage from Pirates triggers the ability, not just combat damage
This is already how it works for double-faced cards, so it makes sense for the same rules to apply here
While the four reprinted legends are fairly heavily played, with both Bruna, Light of Alabaster and Daxos of Meletis in the top eight UW commanders on EDHREC, Bosh, Iron Golem as the 19th most played red commander according to EDHREC, andBudoka Gardener just barely cracking the top 50 for green commanders, no amount of playability can overcome the lack of numbers compared to previous years
You can follow it up with a spell cast from exile to give your entire board a +1/+1 counter, slowly growing Zuko and increasing your mana output from that firebending ability
A card being functionally identical to another means it has the same card type, subtypes, abilities, mana cost, power, and toughness