Removal like Path to Exile and Reckless Rage keeps the path clear for your creatures to get in, and youve even got big splashy finishers like Soul's Fire or Chandra's Ignition to convert all your buffs into a huge burst of damage
Lifelink, unlike trample, works even when youre blocking, so you can use it to not only send your opponents creature packing with its +3/+0 , but also recoup some lost life or create a buffer
Progenitor Mimic - This one is cheating a little because it's more a clone than a token generator on ETB, but by flickering, you can routinely change up what kinds of tokens you're making, which is always a big help
So, now, lets take a look at the top 10 cards defining the Standard format right now
Inside a yellowish area, you should see four tiny red dots that form a distinct, upside-down L shape