Ambiguous target choosing for abilities with multiple targets

In the game of Commander I just played, my opponent kept misplaying abilities which involved sacrificing or removing counters from permanents, so these cards need better explanatory text about which target you're declaring with which clicks:
[[Retribution of the Ancients]]
[[Pentavus]]
[[Ghave, Guru of Spores]]

(There's probably others, but those were the ones that were causing problems this last game.)