You never want to be that player, because even if chip damage is to be expected and nothing to get upset about, it does add up
Unearth Unearth is often 1 mana for 3 manas worth of a card, with creature selection no less
There are some very powerful cards to get from Extradimensional Crisis, like Buzzwole Ex, Pheromosa, Kartana, Luxray, Tapu Koko Ex, Zeraora, Shiinotic, Nihilego, Guzzlord Ex, Silvally, and Celesteela on the Pokemon side, with Repel, Electrical Cord, Gladion, and Lusamine all being decent Supporters or items too
That being said, white happily runs Sunlance while red doesn't bother with Flame Slash often so being worse than a red option isn't overly condemning
If Yarus, Roar of the Old Gods dies at the same time as one or more face-down creatures you control, its last ability triggers for each of those creatures
It doesn't copy whether that permanent is tapped or untapped, whether that permanent has any counters on it or any Auras and/or Equipment attached to it, and it doesn't copy any non-copy effects that have changed that permanent's power, toughness, types, color, abilities, or so on