Due to how slow the Primus is to actually kill someone it is more of a stall, defense and value card than a true game ending threat
Warp Warp is a mechanic that is geared towards brewing because it is powerful and creates mini-puzzles of how to get additional value out of a summoning sick creature that only sticks around for your turn
There are boundless options in this category
Theres no single name for the phenomenon, which is interesting, as I thought folks in the stock market had a cute phrase for just about everything, like a dead cat bounce or economic moat or diamond hands. In the ProTrader Discord, Im open to coining a phrase, if youve got a fun idea get it in there and lets make it work
(2018-04-27) Precognition Field lets you look at the top card of your library whenever you want (with one restrictionsee below), even if you dont have priority
Rhinos Rampage Rhino's Rampage slacks on the buff, but its an impressive removal spell with two-for-one potential at just 1 mana