The definition of a kill turn is "the turn after 30 Insects are put into the graveyard by the + activation." What can be understood from the table above From 3 to 6 non-Insect cards, both the ~3T kill probability and the ~4T kill probability increase
These include our first of many Spiderman cards, Sensational Spider-Man, as well as Doc Ock, Venom, and Green Goblin
Just my opinion, but I strongly feel that any kind of extreme rarity (or unique) element to a game should by only a component quality upgrade like the painted tokens you mentioned
After pitting todays top creatures against each other, I have come up with what I believe to be the current 12 best MTG Creatures of all time
Liliana offers the ability to pump up a board with 2/2 Zombies, giving a player plenty of blockers to throw under an attack, and subsequently letting them draw a card