All three of these can be found in this video of @TCAGaming , who was so kind to send one over to me for my collection
Thats where some powerful draw engines come in
In terms of other colourless cards, I like Duplicant as a potentially free removal spell, Wurmcoil Engine for the value, Myr Battlesphere for early damage output and Steel Hellkite as a flying threat that can wipe out huge chunks of the board
Hardy of Myra's Marvels really reads as a vanilla creature lord of sorts since the cards with three lines of flavor text become really efficient creatures such as Memnite, Savannah Lions, and Quilled Slagwurm
After all, Facebook is a social network
Gandalf the White could see play in legend-heavy Commander decks with white mana as a support card, but on the whole, legendary flash isn't a strong enough effect for Gandalf the White to be a viable Commander