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
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
Artifact Color tag templates(None) Eye of Ojer Taq : Add one mana of any color
So, now, lets take a look at the top 10 cards defining the Standard format right now
Not all players shuffle delicately
The one fundamental thing I was noticing about constructed when compared to cube is how many games were won or lost based on running out of gas