Because damage remains marked on creatures until the damage is removed as the turn ends, nonlethal damage dealt to creatures you control may become lethal if Leyline of Hope leaves the battlefield or if your life total drops below 7 life more than your starting life total
Consumptive Goo Id only actually play Consumptive Goo if I ran into it in a haul of random rares
With most Affinity lists being more of the Grixis variety, it's likely this won't find a home in current lists, but we may see new variations of the archetype appear
Find the full decklists and prices in this article
For Standard decks like mono-blue or mono-red, this often means playing a lot of cheap cards with immediate impact, since four one-mana spells add up to more impact than one four-mana spell
Its huge for a midrange deck, or even a control deck, even if you only trigger two of the four modes