Green Goblin's last ability counts the number of cards you have discarded previously this turn, including the one you discard to Green Goblin's own ability
Having specific permanents you care about isnt a deal breaker since the trade is still one-for-one, but not having backup plans when they get answered is

When this token is put into a graveyard, each opponent loses 1 life.) 9.5/10$0.25 Fake Your Own Death Instant Until end of turn, target creature gets +2/+0 and gains "When this creature dies, return it to the battlefield tapped under its owner's control and you create a Treasure token." (It's an artifact with ", Sacrifice this token: Add one mana of any color.") 9.5/10$0.25 Fake Your Own Death Instant Until end of turn, target creature gets +2/+0 and gains "When this creature dies, return it to the battlefield tapped under its owner's control and you create a Treasure token." (It's an artifact with ", Sacrifice this token: Add one mana of any color.") 5.8/10$0.29 Presumed Dead Instant Until end of turn, target creature gets +2/+0 and gains "When this creature dies, return it to the battlefield under its owner's control and suspect it." (A suspected creature has menace and can't block.) 5.8/10$0.29 Presumed Dead Instant Until end of turn, target creature gets +2/+0 and gains "When this creature dies, return it to the battlefield under its owner's control and suspect it." (A suspected creature has menace and can't block.) Bail Out Instant Until end of turn, target creature you control gains "When this creature dies, return it to the battlefield tapped under its owner's control

Glimmers of a single character can make appearances in multiple sets with extremely different designs, each highlighting a distinct facet of the character
This means that for our deck we want some way to force opposing creatures to attack a player that is preferably not us, either by deterring attacks by means of some kind of pillow-fort or deathtouch, or by playing into the goad theme
Community databases for card text, set, and printing notes so you do not mix versions