steady ice
[[Sloppity Bilepiper]] has SVar ExileEffect, the GrantCascade Svar however does Execute$ ExileEff
And [[Simic Basilisk]]'s Svar DestroyTrigger does Execute$ DelTrig when it only has SVar:DelTrigSimic
not sure if these are actual errors since i'm not yet familiar with the codebase
grizzled flowerBOT
Creature — Demon
Jolly Gutpipes — 
, 
, Sacrifice a creature: The next creature spell you cast this turn has cascade. (When you next cast a creature spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)
3/3
Creature — Basilisk Mutant
Graft 3 (This creature enters with three +1/+1 counters on it. Whenever another creature enters, you may move a +1/+1 counter from this creature onto it.)
: Until end of turn, target creature with a +1/+1 counter on it gains "Whenever this creature deals combat damage to a creature, destroy that creature at end of combat."
0/0
sacred widget
for the first it should be cleaned up even though the param just doesn't do anything on a static