The unblockable is nice, too especially if you can get your attack buffs from attack triggers, rather than static buffs
When necessary, it deals that last extra point of damage to a powerful blocker, or it helps your creatures survive combat never failing to create value with that token
Not every holographic card was made equal, with some Gyarados and Hitmonchan appearing in theme decks, this meant you could open two boxes to yourself and still not pull a Charizard and the main point is back in the day the demand far outweighed the supply, so who could get their hands on multiple boxes let alone multiple packs
On pure rate I don't think Jace quite gets there, but if you're doing some serious graveyard stuff it's hard to imagine a better planeswalker for your deck
March of the Machine contains some absolute bangers that any player would love to crack open