Commander, previously (and still in some circles) known as Elder Dragon Highlander, is a popular MTG format in which players use carefully-designed, 100-card singleton decks, headed up by a powerful Commander
TCG Pocket's battles are indeed slimmed down a little from the standard real-world ones (and those of the somewhat quaint-by-comparison TCG Live and TCG Online, which replicate the real-world ones precisely)
For instance, Myr Enforcer and Gearseeker Serpent both cost 7, but play out differently and promote different deckbuilding incentives
Overall, Zoroark is an intriguing option in some strategies, and it is great for punishing an opponent who builds up their bench too much
We were definitely excited by the idea. The rub
Fractured Realm's ability doesn't copy the triggered ability