2020-06-23 : Hexproof from blue means that Sporeweb Weaver can't be the target of blue spells your opponents control or abilities your opponents control of blue sources.

2020-06-23 : If your life total is brought to 0 or less at the same time that Sporeweb Weaver is dealt damage, you lose the game before the ability goes on the stack.

2020-06-23 : Sporeweb Weaver's last ability triggers even if the damage causes it to die.

2020-06-23 : Sporeweb Weaver's last ability triggers just once, no matter how many things deal how much damage to it at once (most likely because two or more creatures blocked it).