You might be tempted to swap out Kotis for Muldrotha, and there is merit in doing so, but you can always bring Muldrotha back turn after turn with Kotis, and eventually, Kotis will outscale Muldrotha in terms of power once you cast two creatures from your graveyard, and will only keep growing
------------------------------------------------------------------------------ Bill A40 - Common Effect: Draw 2 cards
Moonshaker's white though, which is a big deal for mono-color Commander decks or non-green go-wide decks
Putting mana rocks in your deck isnt difficult, though, and thats before we talk about things like Basalt Monolith
Surface Gloss, print quality, scratches, creases, stains, and any loss of original luster
Or you can just use it for maximum value and use all their removal to get rid of any problems you might have