First up, I should tell you that Set Boosters are going to cost a little more than Draft Boosters (we estimate about $1 more per pack, but it may vary from region to region), but because you have the opportunity to open more rares per pack (you can open up to four rares or mythic rares in a Set Boosterboth wildcard slots, the rare slot and the foil slotand that's not even counting The List ), we expect that you will get the same number of rares and mythic rares per dollar spent as you would buying Draft Boosters
This two drop can be sacrificed to your effects, and then grab you a Swamp out when you have spare mana
Mythic rares tend to show up at lower-than-expected rates in most Collector Boosters, so they often hold their value pretty well regardless of how much Constructed play they see
Getting to sacrifice a creature to counter a spell is a pretty good deal, especially for only 1 mana on activation
If you can't settle on a theme on your own, you might draw some inspiration from an Elves deck, Mono-Green Devotion, or Spellslinger list
