If an activated ability of a creature you control costs no generic mana to activate (for example, if it costs , it costs, or it costs only nonmana actions such asor "Sacrifice a creature"), Training Grounds simply won't affect it
Hand Disruption: Cards like "Thoughtseize" can force you to discard important cards from your hand, affecting your overall strategy
This time around we're taking a look at some under appreciated ways of adding mana with a few great picks for your Commander deck
Choose a Background (You can have a Background as a second commander.) Legendary Creature - Human Warlock Zagras, Thief of Heartbeats This spell costs less to cast for each creature in your party
The first appearence of Tarmogoyf is a bizarre looking piece of cardboard with the mana cost on its left instead of its right, and some curious little mark in the top left corner
Quick Draft has you drafting with bots, then playing best-of-one with other human players