If Octagon decided to eventually expand from just adding the newest set of cards to bring back cards from old sets, what card(s) or set would you like to see them introduce?
I would love to see them bring back the Kamigawa block. Would love to see how samurai and ninjas would fit into the mechanics of this game 
There are probably licensing issues that have caused them not to go to older sets, as well as there’s a steady enough stream of new sets that they haven’t had to.
However, I would like to see them expand the “small” sets with more cards at some point (common and uncommon only, please!) There were a lot of great cards in Oath of the Gatewatch, Eldritch Moon, and Aether Revolt that weren’t included because they didn’t do any of the common rarity cards from those sets. I’d also wish they’d have introduced the revolt mechanic in Aether Revolt. Possibly with effects like “whenever a creature or support you control is destroyed, ”
That said, if they were to release an older set, I’d hope for Innistrad and Dark Ascension followed by the original Zendikar sets. Arlinn and Ally Gideon would both really benefit from the addition of relevant creature types.
I’d love to see the weatherlight/Phyrexian blocks done. I know there were no Planeswalker at that point but it wouldn’t be too hard to convert Gerrad and his crew into P/W’s
i vote for Shandalar. Because Rainbow Knights and Fairy Dragons.
He wasn’t one yet but Karn. How would a colorless walker work?
Urza was still alive then, so no Karn yet. Not sure which other planeswalkers were involved then.
They could do Gerard, Miri and the rest of that crew.
Or Urza, him and Mishra would be interesting to see add in Yawgmoth for extra fun
I would love that. There were planeswalkers back then. A lot of the primary characters were pws, they just didn’t have the card type. I’d love to see any of the pre mending pws in the game. I’d even love if the mending story stuff made an appearance. I was super happy when the time spiral block was out because it was so nostalgic and I really liked the alternate reality versions of old cards like ground shaker.
I just want Rabid Wombat after seeing your avatar, @FindingHeart8. Maybe +2/+2 for each support in play?
I like this! And props to recognizing the card 
in the mtg card game I had a blue/green deck with a playset of Rabid Wombats, and the rest of the deck was creature search + all the different clones…so I could make more Rabid Wombats
Urza block was strong. But they will bring a card called ‘urzas acadamy’ 5mana support… “If you draw a card you first card gets full mana”
And then wonder how anyone can manage to break this thing… And nerf it after 6 month.
Mirrodin was strong to…
Skullclamp, artifact lands, disciple…
Hahaaha! Implement a balanced version of Mirrodin here including all the broken paper cards in an actual balanced way!
Balanced like pre-nerf baral, omni or new perspective?
Nah, for real balanced! The problem is it’d be way too much development work for the small custoemr base we have here to make it worth doing.
You have other options here than in paper… The Artifact lands could be colourless support tokens that give 1 mana at the start of turn or they could do something like deserts and worry about the number in your graveyard or even in your hand. There are a lot of options and even if it wound up broken it would end up being in a very different way.
But, really, my personal love is Ravnica and the guilds, that’s what I’d really want.
I’d love to see Scars of Mirrodin block. Interestingly enough, we already have 3 of the 5 planeswalkers from that block in Koth, Elspeth, and Tezzeret; with Koth and Tezzeret being the actual versions from the block while Elspeth’s PQ version is from a later set. The other two are Karn and Venser. I wouldn’t even want them to bring a colorless Karn into PQ because colorless wouldn’t transfer over well. He’d either have to play only colorless or have access to all colors which would be far too weak or strong respectively. Venser could bring a very different style to the blue/white color combo though. I wouldn’t even mind seeing a second version of Elspeth either. It would be interesting to see how they translate the Praetors and Geth, to name a few, into PQ as well as the big mechanic of the set: Infect.
Heh, to balance Karn… He can play any colour common/uncommon but only colourless rares and up
Pretty clever, I like it. There are some very strong colorless cards obviously but it’s the utility commons and uncommons that are lacking.
Or he is limited to only colorless cards, but has amazing Mana gain.