KATARA, WATERBENDING MASTER Katara is competitively costed considering her ceiling
One classic example is Supreme Verdict from Return to Ravnica, which I still think is the best board wipe ever printed
This will also eliminate the nonbo between Path to Exile and Mana Leak, incidentally making Path to Exile a better card in control decks
Pflicht bei Sperrung / Required on block: 1
Once you hit that critical mass of artifacts, you should be able to draw through your deck and kill your opponent by playing Second Sunrise over and over again with Conjurer's Bauble, Pyrite Spellbomb, a few copies of Lotus Bloom, and an artifact that draws a card
A card that can kill Heliod, Sun-Crowned, Death's Shadow, Blood Moon, or Jace, the Mind Sculptor deserves a long look