While all are powerful in their own right, especially with magecraft or token-matters effects, they didnt quite make the list because they serve a different purpose
This is some relatively deep lore from a long time ago, so no worries if youre drawing a blank
Hatching Plans Extremely efficient draw if you have a way to sac permanents, Hatching Plans only costs one blue and one colorless mana to sit on the board and wait
Jumpstart is perfect for playing with friends that dont have MTG cards, or to introduce new players to the game
Dinosaurs as a creature type dont really have lords, per se (or creatures that boost power and toughness of other Dinos or bestow notable keywords), which is surprising, as even Treefolk have a banger one
Rooms are a mechanic in a subset I call "two-in-one cards." These are cards that represent two cards but exist on a single card, although possibly on both faces