A: Sadly for your karaoke-loving Dryads, an emblem is not a permanent, and thus can't be enchanted by Song of the Dryads
With a 60-card deck, if youve only seen two lands in your top ten cards, there are 22 lands out of 50 cards remaining, so rather than having a 40% chance to draw a land, you have a 44% chance, but with the 600-card deck, you have a 40.3% chance
They might be worth more than you think
Final card size: often around 3.5" x 5" (89 x 127 mm) Bleed to supply: 0.125" on each side (file: 3.75" x 5.25") Recommended safe margin: at least 0.125"0.1875" inside (about 3.25" x 4.75") Round corner radius: 1/8"3/16", depending on look and handling This type of card uses more boards, is more expensive per deck, and weighs more during transit
By itself it turns your Commander into a 3 turn clock vs any opponent, and she blocks better since she'll deal double damage
But it's more useful than other graveyard effects like persist and undying in a self-mill build because those effects trigger on creature death, while unearth works as long as the card is in the graveyard