Normal summon the deck master to search any sacred beast card, often Dark Summoning Beast to get a Sacred Beast (Raviel) on the field.
Gofu is used to get a link 3.
The predaplants are filler. Do the scorpion combo to get the predaplant fusion from the extra deck on the field.
Painful choice and reasoning are used to get/summon a card, but more important is to try and mill traps so Uria gets more attack points.
Instant fusion is used to get thousand-eyes, use effect, link away for relinquished anima, use effect. Cool, you just removed two monsters.