Ward 4 is an absurd level of protection - players wishing to target Kappa Cannoneer with removal spells will need to pay five mana at a minimum to do so without it being countered, and that's assuming the removal spell only costs one mana
The cycle was later completed in Commander Legends so all 10 color pairs have access to one
Savvy players of a deck known as "The Deck" used to throw in a couple of copies of this card-advantage artifact remover in order to, well, gain card advantage, while improving their board positions
It is a very useful deck for players looking to play Sapphire in their deck, however
This color combination often embodies themes of organized rebellion (Red-White) mixed with elements of sacrifice or morally grey tactics (Black), fitting the struggle against a tyrannical empire and the use of powerful, sometimes dangerous, magic