jace multiversal architect
There is a bug on arena with the new "jace, multiversal architect" passive ability. when your opponent does not pay the 2 their creatures cannot attack him, however If your opponent is attacking with a creature like "loki, the deceiver" that creates a tapped and attacking creature token, that token can then target your jaces to attack them. this has happened multiple times, i'm pretty sure this has to be a bug given the wording on the card.
insaminator#65862
shared this idea
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Rezzahan#77802
commented
Not a bug. Any attack restrictions or requirement only apply during the declare attackers step's turn based action of declaring attackers. Any creature entering attacking is not subject to them. That's in the rules.
508.4. If a creature is put onto the battlefield attacking, its controller chooses which defending player,
planeswalker a defending player controls, or battle a defending player protects it’s attacking as it
enters the battlefield (unless the effect that put it onto the battlefield specifies what it’s attacking).
Similarly, if an effect states that a creature is attacking, its controller chooses which defending
player, planeswalker a defending player controls, or battle a defending player protects it’s attacking
(unless the effect has already specified). Such creatures are “attacking” but, for the purposes of
trigger events and effects, they never “attacked.” They remain attacking creatures until they’re
removed from combat or the combat phase ends, whichever comes first.