If the triggered ability triggers more than three times in a turn, no mode can be chosen for any instances of the ability after the third, and those will be removed from the stack and do nothing
Mechanically, this translates into giving all your creatures Firebend 5 , which means a lot of mana if youve built even a modest board
Greens best beaters and ramp spells (Cultivate, Kodamas Reach, mana dorks) are dirt cheap, so this is one of the lowest-priced I just cast huge threats decks in the format and a perfect way to learn how mana ramp turns into a board presence
Cards like Sun Titan are ideal for this plan, as you can use them to accrue significant value over time through creatures like Eternal Witness, Loyal Retainers, and Wood Elves, fetchlands like Bloodstained Mire, or even previously destroyed mana rocks, so having a big creature or two that can fill this role is very helpful when possible