For these cards, you get each of these alternate versions as often as the other and, in total, as often as other Booster Fun cards that only have a single variant
Kindred Rules A card type
(To mill a card, a player puts the top card of their library into their graveyard.) Enchantment Terisian Mindbreaker Whenever this creature attacks, defending player mills half their library, rounded up
The reasons for using the artifact base are to increase your odds of making a turn one play infect creature and to be able to abuse things like Cranial Plating and Arcbound Ravager for killing blows out of nowhere
In Amonkhet block, cards with another new ability, Aftermath were printed
Looking back at your mistakes can feel horrible and embarrassing, but its the only way to improve