In this case, having the activated abilities of all artifacts in your graveyard is extremely powerful, especially when you start throwing Staff of Domination into the mix
Everything revolves around gathering the right cards to perform a "Yaku" and Synchro Summon the Synchro Monster corresponding to that combo
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At the time mill decks tended to be mono-blue or white-blue and were all about controlling the environment, using milling as a win condition once control was established
This style of deck-building has allowed me to craft a number of competent mono-white decks that can hold their own in Commander tables from very casual all the way up to cEDH
Number C32: Shark Drake Leviathan Rank 5 WATER Sea Serpent Xyz Effect Monster ATK/ 3100 DEF/ 2600 4 Level 5 monsters You can also Xyz Summon this card by discarding 1 Spell and using 1 Rank 4 "Shark Drake" Xyz Monster you control