Basically, deathtouch makes a creature a lot more dangerous than it otherwise might be
Do 5-color commanders allow for better deck building, more flexible games or just guide players towards good-stuff piles
lastly Muraganda Petroglyphs is something that really helps the deck if you just don't have the mana to morph your creatures since then they will at least be 4/4 bodies instead of 2/2 ones and odds are it shouldn't help your opponents since no one really plays vanilla creatures in edh
As I said earlier, by relying on a parasitic mechanic like energy its very hard to fully take advantage of the massive card pool that Pioneer offers
Garruks Uprising by contrast takes the typical Green approach of tying draw draw to creatures, in this case whenever you drop out a creature of power 4 or greater plus a bonus if you already had one out when the Enchantment hits the battlefield
Scute Swarm is a litmus test card too, this time asking if players are running enough wraths