Not really, this is due to the Questing Adventurer using the keyword "play". Play means it only triggers whenever a card reaches the field due to you selecting it from your hand. The alternative would be the keyword "summon" which can be found on cards like Knife Juggler which allows the effect to trigger whenever you get something on the field, this includes Hero Powers, Battlecrys and spells like Feral Spirit.
As an example, you currently have a Questing Adventurer on the board. Than you play a Murloc Tidehunter. The adventurer will get +1/+1 due to you playing the tidehunter. However, you won't get another +1/+1 for the Murloc Scout that gets summoned by the other murloc.
There's also the fact that the card you play doesn't have to be a minion summon, any kind of spell or card play will trigger it. So even if Hero Powers did trigger the questing adventurer, it would be the same for all classes, since the effect of the card played doesn't matter to the questing adventurer.
I'm curious, do they syngergize? This could be a really powerful combo if yes.
Not really, this is due to the Questing Adventurer using the keyword "play". Play means it only triggers whenever a card reaches the field due to you selecting it from your hand. The alternative would be the keyword "summon" which can be found on cards like Knife Juggler which allows the effect to trigger whenever you get something on the field, this includes Hero Powers, Battlecrys and spells like Feral Spirit.
As an example, you currently have a Questing Adventurer on the board. Than you play a Murloc Tidehunter. The adventurer will get +1/+1 due to you playing the tidehunter. However, you won't get another +1/+1 for the Murloc Scout that gets summoned by the other murloc.
There's also the fact that the card you play doesn't have to be a minion summon, any kind of spell or card play will trigger it. So even if Hero Powers did trigger the questing adventurer, it would be the same for all classes, since the effect of the card played doesn't matter to the questing adventurer.
Ah, I see. Thanks for the feedback!
Although, other cards that trigger off minions being summoned will work with the paladin and shaman abilities