Since anyone affected is not in control of their Slippery Advantage, this imposes a DX-2 roll each second to any attempt to stand up or stay standing. It also has the usual benefits.

This is a Wizard's Guild restricted spell. Members may learn it at no cost.

Affliction [26] 
    Advantage [+44%] 
        Slippery 2 [4.4] 
            Cosmic (Works Through Boots) [+50%] 
            Partial (Feet) [-40%] 
    Malediction (Speed/Range Table) [+150%] 
    Based on Activation Roll [+5%] 
    Magical [-10%] 
    Spell Components [-30%] 
        Must say "slip" in Latin 
        Must gesture with hands 
        Must hold ice or a drop of oil 
Level 2 [31] 
    Add Multiple Targets 1 [+50%] 
Levels 3+ [+5/level] 
    Increase Multiple Targets by 1 level [+50%]