Once Fangorn, Tree Shepherd leaves the battlefield, you have until the end of the current step or phase to spend whatever green mana is in your mana pool before it too empties as normal
(It started in common, as design is always optimistic it will work out, but it moved to uncommon as the card advantage, as it most often does, proved to be too powerful for common.) The problem with limiting heroic to spells, though, is that it just doesn't leave a lot of opportunity for it to happen in Limited
It would take a good few years for us to see the true spiritual successors to the original Titan cycle, Blight Titan and Sludge Titan
All of these black decks need to put a lot of weight on March of Wretched Sorrow to just not die
[43] A simplified type system was adopted from the video games for use in the trading card game
With so many expansions, sets and promos being added to the game every month, it's important to look at where it all started