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(Discard all other cards attached to that Pokemon.) You may play only 1 Supporter card during your turn (before your attack)
Or you can set up an engine where you have sacrifice fodders or tokens in play
Any previous damage dealt to the Basic Pokemon will be transferred to Stage 1 Pokemon
In just a few turns, each sliver can have a dozen different effects applied that tip the game in their controller's favor
With low mana value mana rocks seeing more play in modern Commander decks, Sunder and other mass land destruction cards arent quite as backbreaking as they used to be, but that just means you might need to play 2 spells or wait until an artifact board wipe has been played by somebody else to slam the doors on your opponents ability to produce mana