https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=461052 Dreadhorde Arcanist lets you recast a instant or sorcery spell from your graveyard for free when it attacks.

Now I had this Situation come up: I had two Arcanists on the field. In the main phase I buffed one of them with Collision // Collosus (+4/+2) costs 2 mana. When I attacked I got two trigger for both the abilitys. I used the trigger of the now 5/5 Arcanist to cast Collision // Collosus again and wanted to buff the 1/3 Arcanist with it, while it's trigger was still on the stack. Sadly, the enemy conceded, so I didn't see how Arena would have handled it.

In this Situation, would my second Arcanists trigger resolve with 5 Power, or with 1?

Thank you.

Dreadhorde Arcanist lets you recast a instant or sorcery spell from your graveyard for free when it attacks.

Now I had this situation come up: I had two Arcanists on the field. In the main phase I buffed one of them with Collision // Colossus (+4/+2) which costs 2 mana. When I attacked I got two trigger for both the abilities. I used the trigger of the now 5/5 Arcanist to cast Collision // Colossus again and wanted to buff the 1/3 Arcanist with it, while it's trigger was still on the stack. Sadly, the enemy conceded, so I didn't see how Arena would have handled it.

In this situation, would my second Arcanist trigger resolve with 5 power, or with 1?

Thank you.