This can be done a few times each round of turns in multiplayer with more instant making tokens like the aforementioned Raise the Alarm and similar effects
Elder Deep-Fiend 8 Creature Eldrazi Octopus 5/6 Flash Emerge 5UU ( You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creatures converted mana cost.) When you cast Elder Deep-Fiend, tap up to four target permanents
Costing just three mana, it is the one that you hard-cast the most often in fact, you will be hardcasting Endurance most of the time, and only pitching it when its very necessary to do so
Thats right guys, of the 53 rares and 15 mythics, only 10 rares and 11 mythics are worth at least the cost of a pack
War of the Spark was still located on Ravnica, but instead of focusing on the guilds, it was a "capstone event set" about a war between Nicol Bolas and several Planeswalkers
Alternatively, in multiplayer games you can use Axis of Mortality to trade two other players life totals, upsetting the balance of the game and making a new archenemy at the table