These decks are generally in EDH's bracket 2 with no pricey game changers and straightforward with easy-to-understand strategies that make them perfect to get into Commander without a huge financial investment
Still it's a solid shadow beater, and you can generally depend on it connecting and generating combat damage triggers which is pretty worthwhile
Speaking of information and allowing you to pace a game and match your spells up against your opponents, that is precisely what Temples are exceptional at doing
Mana ramp cards like Sol Ring or Coldsteel Heart also help to determine the number of lands you can play, since these ramp spells let you hit the determined spot of mana where your deck operates the best
It doesn't help you on other players' turns, and you'll still only end up with one permanent new land per turn
Whenever you cast a noncreature spell, put a +1/+1 counter on Vivi Ornitier and it deals 1 damage to each opponent