For example, if you look at a player's graveyard, you don't inherently know what's in their library, so you're forced to remember what was in both
This was the face commander of Modern Horizons 3 s energy-focused Commander precon, and it offers you some powerful effects
Fast mana, no concessions, near-mandatory to play in every deck, and included in every precon
Lorcana: Whispers in the Well Starter Deck - Sapphire & Steel Lorcana: Whispers in the Well Starter Deck - Sapphire & Steel Description Follow the beckoning call and find out what haunts Whispers in the Well
It can be painful to find room in the 99 for cards like Relic of Progenitus and Soul-Guide Lantern that interact with the graveyard, so I highly value cards that happen to eat away at that resource
Building decks around abilities that operate on classifications is advanced play for most, but if you carefully use the fact that a deck can feature a card up to four times, you could be onto something special Abilities and Effects : While some cards will simply feature a blurb and image, most of them will have some sort of ability or effect on them