The TCG came after the success of the Game Boy games, Pokmon Red , Blue , and Green
These are basically ways to give an ability that will go away if the creature leaves the battlefield
Obviously, the cost of essential items isnt down to Wizards business decisions, but releasing a set that asks so much from players does feel like a slap in the face
Personalization
Whenever another Creature dies, or a Creature card is put into a graveyard from anywhere other than the battlefield, or a Creature card leaves your graveyard, Syr Konrad, the Grim deals 1 damage to each opponent. Basically, get some mill and discard in your deck and you can ping everyone to death
Orichalcos Aristeros cannot be destroyed while Shunoros is on the field