Most of the time holding on to your legendary creature will just be better than Amassing 2
Check your printers manual for guidance
Well, its time for me to eat my words, because the blue spell I have fallen in like with is Eluge, the Shoreless Sea
Meanwhile, Izzet Charm can still counter that planeswalker (admittedly in a much less efficient way since it costs twice as much as Spell Pierce does), but it can also kill the Dark Confidant and, when the other modes are dead, potentially improve your hand by looting away some extra lands, Faithless Lootingstyle
That essentially means that Ditto can act as a 5th copy of some of your Pokmon, so you dont need to worry that much about recycling
Its a little more expensive than Brago but also far more explosive since you arent restricted to a once-per-turn flicker