Say I want to kill Player As commander: I attack Player B with my Rigged creature and ask them to block so I can redirect the damage to As creature
You can even build your entire deck around Astral Slide, running the best ETB creatures like Mulldrifter, Shriekmaw, and Gonti, Lord of Luxury, and abusing them further with Panharmonicon / Brago, King Eternal / Strionic Resonator / etc
From free mana and absurd card draw to removal spells so strong Wizards still refuses to reprint them into Standard, these are the 10 most powerful commons in Magic history
You cannot respond to cards played on another players turn, so there is no reason to reserve ink
(2020-08-07) If the target creature is an illegal target by the time Crib Swap tries to resolve, the spell won't resolve