In summary here, this is certainly a more complicated deck to run than the Ruby and Amethyst deck, but it is - in my opinion - way more powerful
Both cards are the same creature type
Abilities that say that a triggered ability triggers additional times won't apply to copying a triggered ability
Error/Errata cards are where a rule was worded incorrectly, a name or word was misspelled, the wrong artist was credited, or incorrect stats were printed
Though exiling four cards a turn sounds like a lot of your deck gone, lets do the math: 100 cards, minus the commander, minus your opening seven-card hand, minus four draw steps by the time you cast this, leaves 88 cards in your library