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This is incredibly important for decks like Chienpao ex that need to discard energy from the board to deal damage to the opponent

This prevents your opponent from activating any sort of battle traps that would mess with your attack, like monsters whose effects activate when theyre attacked

Urza was an artificer, so we wanted to play that up

With Ikoria: Lair of Behemoths , we visit a world dominated by monsters

I love when Commanders have little caveats of this sort, as they challenge us to look beyond the obvious staples for Reanimator for new synergies while allowing WotC to print Sefris with a very low mana value for what she provides