All Will Be One not functioning correctly.
I am on PC, though my platform is kind of irrelevant to the issue at hand. The Enchantment All Will Be One has the following ability: "Whenever you put one or more counters on a permanent or player, this enchantment deals that much damage to target opponent, creature an opponent controls, or planeswalker opponent controls." However, in game, the 'or' in that ability is treated as an 'and', meaning whenever, say, a Vivi Ornitier player puts a +1/+1 counter on Vivi, instead of dealing 1 damage to their opponent, OR a creature they control, OR a planeswalker they control, they are instead allowed to do all three. This is blatantly contrary to the text of the card, and is clearly a bug.
Fangboy131#62952
shared this idea
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Rezzahan#77802
commented
You sure, you are not mistaking the damage to the player that VIVI does when it gets a counter, with the damage that All Will Be One does to the creature/planeswalker?