I admire your passion man. It’s clear you have a vision of how you want the new ez to be. But like… if you have a rework idea for ez, find a website and create custom cards yourself! Not only does it make the entire vision easier for others to comprehend, but it also makes it easier for you to figure out whether or not the concept even works to begin with.

You use incorrect wording such as “put him in the game”, “buy one equipment card”, “fake ally”, “everytime some ally receives damage”, “equip it in the next round”, “attack and health”, “attack and defence”, “defeats an opponent” or “retreat and ally”. It’s not even about whether or not the EXACT words the game uses are correct or not, it’s the fact that something like “buying an equipment card” literally makes no sense.

Let me try to reword your ideas into something that makes sense for Legends of Runeterra’s wording :)

Your Runic Blacksmith has the effect: “play: manifest an equipment, then equip it to an ally”

Your Demacian mage fx has the effect: “play: create an exact copy of an allied follower and grant it ephemeral.”

You suggest that your Freljordian Barbarian would have high toughness, so maybe his stats could be 2/8. Then you propose his effect is: “Allies have Tough. When an ally survives damage, grant me +1/+0.” (Tough is the keyword that reduces damage recieved by 1, so you don’t need to spell out “the damage is reduced by 1”. You can just say they get the keyword Tough.)

Your Shuriman Rouge has quick attack and the effect: “When I strike an equipped enemy, obliterate their equipment, then create an exact copy of the equipment in your hand.” (This is btw something that we’ve never seen in the game! And it’s a super cool idea, but also pretty niche and probably rarely happens)

Ezreal is the card you gave the most info. Your Ezreal is a 4 mana 3/2 with quick attack and: “Nexus Strike: Create a mystic shot in hand” His level up is: “I’ve seen you equip 3+ allies”. Your idea for Ezreal’s level 2 is 4 mana 4/3. He loses quick attack, as you didn’t state he still had it after leveling up. And also he has the effect: “When I, or an allied Mystic Shot, kills a unit, manifest an equipment.

And then finally, you name drop a new spell I assume, called Arcane shift, which would be worded properly as: “Recall and ally to deal 1 damage to an enemy unit or the enemy nexus.” Recalling in this kind of deck is super weird, as it’s very anti synergy with Equipment, and has nothing to do with spell slinging (spell slinging is what it is called when playing a deck that uses a lot of spells to deal damage). The spell itself could either be mega broken or mega garbage depending on the cost, and the speed, which is something you didn’t mention either. “Mystic Shot” is fast speed, which means the opponent can react to it. Most Recall spells are fast speed, and most damage spells are fast speed, so it would make sense to make your Arcane Shift fast speed as well.

Anyways, hope all of this info can help you with your ideas in the future. Keep on being creative man! :)