Bu fixes, removed extra parenthesis and spaces at end of line

Baron Sengir
Myr Moonvessel
Synod Artificer
Piston Sledge
Ichor Explosion
Boreas Charger
Captivating Crew
Gate to the Afterlife
Imaryll, Elfhame Elite

projects/mtg/bin/Res/sets/primitives/mtg.txt

@@ -9207,7 +9207,7 @@ type=Artifact
 name=Baron Sengir
 abilities=flying
 auto=@vampired(creature) from(this):counter(2/2,1) all(this)
-auto={T}:regenerate target(other vampire)
+auto={T}:target(other vampire) regenerate
 text=Flying -- Whenever a creature dealt damage by Baron Sengir this turn is put into a graveyard, put a +2/+2 counter on Baron Sengir. -- {T}: Regenerate another target Vampire.
 mana={5}{B}{B}{B}
 type=Legendary Creature
@@ -56949,10 +56949,9 @@ toughness=1
 [/card]
 [card]
 name=Ichor Explosion
-target=creature|myBattlefield
 auto=all(creature) -storedpower/-storedpower ueot
 text=As an additional cost to cast Ichor Explosion, sacrifice a creature. -- All creatures get -X/-X until end of turn, where X is the sacrificed creature's power.
-mana={5}{B}{B}{S(artifact|mybattlefield)}
+mana={5}{B}{B}{S(creature|mybattlefield)}
 type=Sorcery
 [/card]
 [card]
@@ -77666,7 +77665,7 @@ toughness=1
 [/card]
 [card]
 name=Myr Moonvessel
-auto=@movedto(this|graveyard):add{1}
+auto=_DIES_Add{1}
 text=When Myr Moonvessel dies, add {1} to your mana pool.
 mana={1}
 type=Artifact Creature
@@ -86968,7 +86967,7 @@ toughness=3
 [/card]
 [card]
 name=Piston Sledge
-auto=aslongas(parents) rehook target(creature|mybattlefield) <1
+auto=name(Attach to creature) rehook target(creature|mybattlefield)
 auto=teach(creature) 3/1
 auto={S(artifact|mybattlefield)}:equip
 text=When Piston Sledge enters the battlefield, attach it to target creature you control. -- Equipped creature gets +3/+1. -- Equip - Sacrifice an artifact.