Personally, I've always felt that its best to try and keep that out of the casual circles
For instance, Pascal, Garden Chameleon has both Amber Ink and Amethyst Ink symbols
Sure, Demonic Tutor could get me an Underworld Breach or it could get me something cool and synergistic
You could be green-based: Creatures (23) 3 Drana, Liberator of Malakir 2 Verdurous Gearhulk 2 Armorcraft Judge 4 Winding Constrictor 4 Rishkar, Peema Renegade 4 Walking Ballista 4 Narnam Renegade Planeswalkers (4) Lands (25) Spells (8) Or you could be black-based, taking advantage of Vampire synergies, which well discuss a little later in the week
There are a few removals like Shriekmaw or Karn Liberated, but for the most part they are shut down quite ably
That means you can use it to avoid any targeted spell, any board wipes that destroy things instead of exiling them or just use it to avoid losing creatures in a big attack