● With Gaia Emperor's skill, try targeting Gaia Emperor. This way, you can get a unit through its skill when its retired, but it will return to the field so you can use its skill again later.
● Don't retire anything when you have Gluttony Dogma on the field if its not going to come back.
● After the use of Gluttony Dogma's Engorge skill, having another unit on the field to attack is extremely useful, so if your opponent managed to survive his two attacks, you have another unit to attack.