Activate Zameck Guildmage's first ability by paying ({G} magic symbol) ({U} magic symbol) , causing all creatures you control to enter the battlefield this turn with a +1/+1 counter on them.
Cast Rograkh by paying ({0} magic symbol) .
Rograkh enters the battlefield with a +1/+1 counter on it due to Zameck Guildmage.
Activate Together Forever by paying ({1} magic symbol) , targeting Rograkh.