Any "As this creature enters," "This creature enters with," and "When this creature enters" abilities of the chosen card will work
Open Boosters from the Current Set If you have enough coins to open boosters and have no idea which packs to open, you might as well go for the latest one that was released
I'm especially curious about party-based combo wins that turn Tazri and infinite mana into a win
Because you can transmute one intended use of energy (say producing mana or killing a creature) into another (+1/+1 counters or thopter tokens), you not only effectively draw a card, you have say in what card you draw and when you get it
Unfortunately, because human-driven factory error cards are almost always the same across the board for a given set (save for a couple of small exceptions), these cards hardly ever drive a premium
A card can enter or become prepared if a condition is met