To synchro summon a monster you must use two or more face-up monsters with a combined level equal to the synchro monster, and one of these monsters must be a Tuner (sadly, they're usually not fish)
Ulamog's Reclaimer is not exactly the most exciting of cards, and another 5-drop isnt exactly what we are looking for, but it does come with quite the stats upgrade over its predecessors as well as remaining a single color
However, if that Instant or Sorcery spell is a Lesson, instead it has a Flashback cost of
this card's name and original ATK become that monster's original name and current ATK, also replace this effect with that monster's original effects, then that monster's ATK becomes 0, also its effects are negated
Kydele is a great way to generate mana, as each card you cycle gives a colorless mana that Kydele can generate, either to cycle more or to cast spells
These staples ensure the deck is not only fun to play but also attractive for collectors looking for high-value reprints