The level three upgrade, which costs five mana, lets you buff one target creature, even if you aren't involved in combat , by +X/+X until the end of the turn, where X is the number of cards in your hand
The life gain from Pelakka Wurm occurs as soon as it hits the battlefield, and since you aren't actually casting it (unless you absolutely have to) that effect can't be countered and 7 life can get you back in the game pretty quickly
Injecting bits of flavour and reminders of past planes, hints of new ones, and expanding the backstory and lore of characters while serving the developmental needs of standard make Core Sets an invaluable playground for Magic moving forward
Spires of Orazca: Strong in Standard
Even if your deck has a really low curve, you probably want a sizable land count if youre running a 4- or 5-mana commander