The trigger event happens, then the ability goes on the stack , then it resolves
Angel of Destiny Atemsis, All-Seeing Etrata, the Silencer Ezio Auditore da Firenze Frodo, Sauron's Bane Hidetsugu Consumes All / Vessel of the All-Consuming Jumbo Cactuar Phage the Untouchable Ramses, Assassin Lord Summon: Primal Odin And these cards grant or create creatures with mega infect (or mega deathtouch, if you prefer): Threshold Alternate Win Conditions Some alternate win-cons require you reach a certain number of cards in zones other than the battlefield
Anyway, I wrote an article just about 6 months ago, with some very basic guidelines and a list of specs
Etali, Primal Conqueror Etali, Primal Sickness Etali, Primal Storm Ghalta, Primal Hunger Ghalta, Stampede Tyrant Nezahal, Primal Tide Tetzimoc, Primal Death Zacama, Primal Calamity Zetalpa, Primal Dawn
Cabaretti Charm Cabaretti Charm makes you two tokens if you really need to, or if you decide not to use its blowout-prone removal option