The problem with T1/2 is that they have options. Whatever you choose to go after them with, there will potentially be defences against.

...that said, if this is a real scenario, they can't actually go all Shrodinger's Wizard on you, so what matters is what they're actually using. Are they LPA-ing Nightmares for Astral Projection? Does the wizard have Celerity? Does the Druid have Greenbound Summoning? Is the Artificer layering up the metamagics to wreak havok with wands?

Defeating them is going to necessarily involve more information. Without that, anything you try could be foilable.