Harmonic Sliver

It seems to me that this is one of the cards that Sliver fans who play in larger card pools should be stockpiling ahead of Theros and its promised enchantment mechanics (and yes, it certainly is about darn time for such a theme!). In a tribal deck, your opponent simply won't be able to keep an enchantment or artifact on the table. It even combines well with flickering effects, and in a pinch you can even play it in decks with something like Chord of Calling because it covers enchantments and artifacts in one card, possibly saving you deck space. Of course, it may also lead to the rest of your group hunting down every copy of Privileged Position in your town, but that's a different problem.

Constructed: 3/5
Casual: 3/5
Limited: 3/5
Multiplayer: 3/5

Today's card of the day is Harmonic Sliver which is a three mana Green and White 1/1 that has all slivers destroy a target artifact or enchantment when they come into play.  Unlike many slivers this works outside of the tribal theme and can see play in multiple Green/White decks.  The mandatory nature of the effect is a drawback, particularly if maindecked against an opponent with few or no targets.  The mana cost is reasonable as removal with a body attached, but it is situational and generally fits into a sidedeck or as a single searchable copy instead of being played in multiples.
 
In a Limited format where this is allowed it has some value against the always popular in format artifacts and enchantments, yet still has the same drawbacks as in Constructed.  A sliver deck should draft these relatively early as removal and to keep it from other sliver players and the priority in Sealed varies based on how many other options are available.
 
Constructed: 3.5
Casual: 3.5
Limited: 3.5
Multiplayer: 3.5