The worst-case scenario of some mom buying this for their kid at Walmart, the kid opening it, not understanding what it is, and it getting lost at the bottom of the toybox (cue "and some things that should not have been forgotten were lost") is not that outlandish
Sylvan Library's controller is responsible for keeping these cards distinguishable in hand, such as by keeping them separate from cards that began the turn in hand
Some of these legendary creatures are technically not playable as Commanders, so no going to tournaments with your Solaflora, Intergalactic Icon equipment deck
Along with the artifact reducers as well as mana rocks, making big splashy plays with Ultra Magnus, Tactician might not be the most difficult thing to do
The pngs at Scryfall (MIC, VOC) aren't quite sufficient for me, though someone with any actual artistic talent whatsoever might be able to deal with them
The -2 does give us some form of card advantage, but the Lumbering Lightshield thats conjured is not very impressive