What if it was an Hourglass like the one Piccolo used to keep Super Buu waiting, not only as a reference but it'd also get the idea across that you need to survive for that long.

Sorry, I know this is old, but Xenoverse 2's Spit works like this, and I think it would work well

After landing his Spit attack, the opponent is stuck for about 10 seconds, they break free when Dabura attacks them, but are stunned for a bit while you're attacking them, perhaps it would work well like that?

it does make more sense, it was just kinda jarring after playing Xenoverse 2 for a while

Uh...
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Great Ape Nappa has hair.