Of course this is usually up to GM discretion: the rules might *say* that an enemy force will break and run if more than 50% of their troops are killed, but if that number only gets to 51% because the pacifist cleric broke his vow and scored a critical hit while having 5 HP and defending the fallen bodies of his comrades, well, even kobolds aren't that dumb
MTGO List Upgrading And Fiddly Bits Most of the potential upgrades are outlined in the deck analysis, but here's a few more cards if you want to take things further: Elesh Norn, Grand Cenobite buffs your token army while crippling your opponents, a terrific inclusion
Consequently, Wizards has rolled out several new takes on the booster pack formula in the last year, all designed to cater to the needs of specific customer groups
The randomness that comes with opening packs might mean more or less depending on the box, and extra mythics can be pulled in The List and wildcard slots, though at a much lower rate