1.2 Spark Reaper’s “Ravnica at War” ability only destroys the player’s creatures, description should read “Destroy all opposing nontoken creatures and supports.”
2.1 When Widespread Chaos uses Massacre and it destroys a creature, the game will either completely lock up or self-close. Probably tied to the exile effect.
2.3 Creatures with Partner do not count towards the Partnership achievement, but spells do.
3.2 Proliferate objective works as “Cast 4 cards with Proliferate in a single turn”, rather than in a single fight.
4.3 Nicol Bolas, Dragon-God’s “Spark Gatherer” ability as listed in game appears to be incorrect. Instead of drawing a card, the ability appears to function as though the text were “Your opponent exiles the last card in their hand. Create a blue, black, and red Gathering Sparks support Token with 3 shields and ‘Whenever your opponent activates a Loyalty ability or a Vanguard ability, gain 2 Loyalty.’”
4.3 “Dragon-God’s Scorn” will destroy opponent’s first (or perhaps last?) creature (i.e. untargeted) if no Vanguards are out. Should read “Destroy an opposing Vanguard support. If you cannot, destroy the (first | last) opposing creature”.
https://wiki.mtgpq.info/wiki/The_Elderspark#Known_Bugs
//Edited Title - Tombstone