The first version of Summon cards that I was happy with were creatures with vanishing and an ability that triggered when you sacrificed them
they abuse the same mana mechanics as Black Lotus and were cut from the games core card set for the same balance reasons it was
Thankfully, other printings of Beacon of Immortality arent quite so expensive at the moment
Essentially, Lander Tokens are just new artifacts you can crack for two mana to get a basic land into play
Not only does this assist players who are falling behind in the game to garner political favour, Gor Muldrak provides you and your permanents with protection from these tokens, so opponents have little to no incentive to attack you with them
Fraying Sanity's triggered ability counts the number of cards that were put into the enchanted player's graveyard during the turn, even if Fraying Sanity wasn't on the battlefield at the time those cards were put there, and even if those cards have left that graveyard