These cards are what happens when the power level knobs get turned just a little too high
Since each sliver card you play makes all your other slivers exponentially stronger, you can't win the game unless you have a lot of slivers under your command
Creature - Shapeshifter Color tag templates(None) Thundermare Haste (This creature can attack and as soon as it comes under your control.) When this creature enters, tap all other creatures
The drawback of giving your opponent a 3/3 flier probably matters in Constructed formats, but its less of a problem in Commander (see: Swan Song)
Mwonvuli Beast Tracker 3 You pay a lot to get that extra power over the Empath
While cards like Elsa, Spirit of Winter and Elsa, Snow Queen do the freezing, cards like Anna, Heir to Arendelle and various rush characters take advantage of the exerted glimmers