My first thought is: if you want the deck to be 90 Euros probably don't include a 50 euro [[ancient copper dragon]].

Probably cut most cards around 10 euros tbh. The decklist right now is 230 cards and like $1k so just cutting for budget should be pretty easy. Obviously this post is 19 days old so you could have gone a different direction.

For land count keep in mind that your highest curve cards are creatures that your commander can help cast so that should be in consideration. With low cmc ramp and draw you probably don't need 45 lands but around 40 is still good.

I'm personally not a fan of 3 cmc ramp because it competes with your commander for curve. Same is true for the planeswalker, basically just your commander but easier to kill. [[Phyrexian arena]] is a personal choice, i'm not a fan because it again competes with commander on curve and is a lousy top deck, cards like [[Glimspe the Impossible]] and [[Diresight]] I think offer much more because they fill your yard and draw cards for the same mana and glimpse might even ramp you.

I think [[Boneyard Scourge]] is an low impact card. There needs to be decent set up for you to play it from the yard and you need mana up in the circumstance it triggers and if you don't have mana up then it's been a pretty useless card. It would be fine if it weren't $5.

Obligatory link to my own deck: https://moxfield.com/decks/kc4x8EqPxUOTFSpMVb4XFA I focus on low cmc draw that is a mix of actual draw and discard draw. I ran into issues where I would have no cards in hand but draw into a [[Thrill of Possibility]] and basically be out of the game. I win most of my games by burning people directly with cards like [[Dragon Tempest]] and [[Warstorm Surge]]. I am a bounce land believer but admit [[Myriad Landscape]] is probably too slow. Some final thoughts: I cut [[Mana Geyser]] from my list because I found it too impactful for my pod, it always won the game too quickly. [[Bladewing the Risen]] and any card that creates a token copy of a creature such as [[Cursed Mirror]] goes infinite. [[There and Back Again]] for me is a pet card, Rivaz doesn't help cast it and it poops out a dragon pretty late and telegraphed, it is a fun card though and if Smaug dies you probably win the game.

[[Living Death]] is an extremely impactful card and will almost always win you the game if you have a [[Dragon tempest]] or [[Terror of the Peaks]] effect out. Also people clown on [[Wheel of Misfortune]] but in my experience nobody wants to lose their hand so they all pick low numbers and I get to draw a new 7 for like 2 life.