Llanowar Elves is a staple 1/1 green Elf that only costs one green mana and taps for one more, but Elvish Mystic and Fyndhorn Elves are functionally identical, so make sure you run all three for a fairly reliable first-turn ramp
The first and most obvious would be the actual dungeons, of which there are just a few
Foil cards tend to be more expensive than their non-foil variants as they take more luck to pull
Beyond Kefka, Umaro, Raging Yeti is another huge monster with a potent triggered ability
I keep getting new questions that I hadn't answered, so I've decided that for a while at the end of my columns I'd answer more questions
EDHREC users are doing this by playing Rev in decks led Will, Scion of PeaceWill, Scion of Peace, which helps you cast all the cards you drew, and The ArchimandriteThe Archimandrite, which lets you threaten a lethal attack out of nowhere