Once on the stack, a copy of a spell is similar to an ability: it's not represented by a physical marker, so players simply remember it's on the stack until it resolves or otherwise leaves the stack, at which point it ceases to exist
That's because Magda can use those dwarves to make treasures, and then use those treasures to cheat any artifact or dragon from your deck into play
The red and white for Clouds color identity is apt given his bold but ultimately altruistic character
If I was going to suggest as many to cut, here's what I would say: Unburden: One player having to discard two is not very helpful in a multiplayer game
Arena Direct: Outlaws of Thunder Junction Sealed Sharpen your spurs and practice your steeliest gaze, because the next Arena Direct is days away
You can bake in some great EtB creatures, and enjoy having the best of an equipment deck with a flicker sub theme