So, Ertai is a great Enchantment sacrifice commander, but a pretty good Bad Gifts commander, too
Missing Link So as I stated earlier, Wizards of the Coast, a Hasbro subsidiary, needs to hold some of the best cards for the next set
And the cards you cast don't get exiled so you can repeat some powerful effects every turn
Hence why Rydias called Summoner of Mist. In Final Fantasy 6 , Terra is half-Esper (the games unique term for a race of summons that have their own plane and culture), so her dual nature quite literally makes her a Magical Adept capable of transforming into an Esper herself and copying a summon on the board
In that deck, Bloodghast can enable absurd amounts of card draw and ramp if it's combined with my commander and a way to untap her like Thornbite Staff
When put together