Sonic, for example, works well with any creature that has haste or flash, so you could create a fast-paced, high-energy deck filled with speedy beings
Paying six mana to destroy what is likely going to be an enchantment or artifact is pretty expensive
Activate Karn and deploy your artifacts in one turn before discard spells can take them away
That is because it can quest for three and, while doing so, you can also banish an item or location to gain two more lore
Just like The Ur-Dragon combo, Progenitus also combos with Rafiq of the Many to kill an opponent with 22 commander damage
The first is Background, which will appear on specific Legendary Enchantment cards that can be attached to their chosen commander