Activate only if you control two or more white permanents
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While you do have to sacrifice a creature to get this effect, its still useful at worst and abuseable at best
Im personally looking forward to trying this card in my Celestine, the Living Saint deck because its not that easy to put cards into the graveyard in mono-white without milling yourself
However, the game's basic gameplay rules have not changed very often, as the basics of the game that began in 1999 are still applicable today