When you tap the enchanted land for that sweet mana you get one extra green for each Elf on the battlefield
In most games, players have access to their Commander on board, making this spell free
Meanwhile, gems are the paid currency
One of my favourite cards in this set, Infernal Spawn of Evil , is easily the best disconnect between the card name and the card art
That ability lets you pick once from four different effects: tapping or untapping a permanent, dealing 3 damage to each opponent, copying an instant or sorcery, or (presumably your last choice) putting Gandalf back on top of your deck
You can change a result to something normally not possible on the die in question, such as a 0 or a 7 on a six-sided die