Having anywhere between 22 and 24 lands is a solid choice
The initial design here was: Battlefield: horizontal In hand: vertical On the stack: vertical Decks scene: vertical Examined: horizontal But after playtesting, it became clear that in many cases the Examined (that's the pop-up you get when mousing over or long pressing a card) actually needed to be contextual, because having a battle in a scry browser suddenly pop up sideways was distracting and did not help with clarity
All these cards are fine and do useful and desirable things at an appropriate power level
Skullclamp is a staple of Token decks, as most are going to be 1/1s, allowing you to easily draw out a lot of cards from your deck to get to your win conditions
[16] Theres a joke in MTG that the 3 most powerful words in the game are draw a card. Cards that draw other cards give you a big advantage, help you find your key cards, and prevent you from running out of things to do
It can be cast by paying one life and discarding a Blue card from the player's hand, instead of paying the mana cost