It goes on the stack after you've drawn and looked at all the cards and finished resolving the spell or ability that caused you to draw them
I believe that we're getting pretty close to making a generic deciduous version of this mechanic
Once that happens, the value of X won't change later in the turn even if the number of lands you control changes
Artifact Color tag templates(None) Decoction Module Whenever a creature you control enters, you get (an energy counter)
One of these Scene Bundles, Garland at the Chaos Shrine , is based on the original Final Fantasy, and is where all the new MTG cards with the Party mechanic can be found
Kardur, DoomscourgeKardur, Doomscourge sits in the command zone, just waiting to hit play and force people to attack