Pyre of the World Tree cause NullPointerException on casting transformed

Something wrong with game data and there are possible cards without ownerId. Need research the real reason and reproduce it. Relates to combo with cost reduction effects like `SpellsCostReductionControllerEffect`. Example with [[Pyre of the World Tree]]

Stack: Cast Pyre of the World Tree using Transformed
Game error:
```
java.lang.NullPointerException
at mage.cards.Card.isOwnedBy(Card.java:258)
at mage.filter.predicate.other.SpellCastFromAnywhereOtherThanHand.apply(SpellCastFromAnywhereOtherThanHand.java:19)
at mage.filter.predicate.other.SpellCastFromAnywhereOtherThanHand.apply(SpellCastFromAnywhereOtherThanHand.java:10)
at mage.filter.FilterCard.lambda$match$0(FilterCard.java:68)
at java.util.stream.MatchOps$1MatchSink.accept(MatchOps.java:90)
at java.util.ArrayList$ArrayListSpliterator.tryAdvance(ArrayList.java:1361)
at java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:126)
at java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:499)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:486)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
at java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:230)
at java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:196)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.allMatch(ReferencePipeline.java:521)
at mage.filter.FilterCard.match(FilterCard.java:68)
at mage.abilities.effects.common.cost.SpellsCostReductionControllerEffect.applies(SpellsCostReductionControllerEffect.java:155)
at mage.abilities.effects.ContinuousEffects.costModification(ContinuousEffects.java:720)
at mage.abilities.AbilityImpl.activate(AbilityImpl.java:444)
at mage.abilities.ActivatedAbilityImpl.activate(ActivatedAbilityImpl.java:220)
at mage.abilities.common.SpellTransformedAbility.activate(SpellTransformedAbility.java:66)
at mage.game.stack.Spell.activate(Spell.java:167)
at mage.players.PlayerImpl.cast(PlayerImpl.java:1350)
at mage.abilities.common.SiegeDefeatedEffect.apply(SiegeAbility.java:110)
at mage.abilities.AbilityImpl.resolveMode(AbilityImpl.java:226)
at mage.abilities.AbilityImpl.resolve(AbilityImpl.java:210)
at mage.abilities.TriggeredAbilityImpl.resolve(TriggeredAbilityImpl.java:254)
at mage.game.stack.StackAbility.resolve(StackAbility.java:85)
at mage.game.GameImpl.resolve(GameImpl.java:1815)
at mage.game.GameImpl.playPriority(GameImpl.java:1738)
at mage.game.turn.Step.priority(Step.java:73)
at mage.game.turn.CombatDamageStep.priority(CombatDamageStep.java:37)
at mage.game.turn.Phase.playStep(Phase.java:205)
at mage.game.turn.Phase.play(Phase.java:91)
at mage.game.turn.Turn.play(Turn.java:129)
at mage.game.GameImpl.playTurn(GameImpl.java:1157)
```

Reproduce the transformed cast of Pyre of the World Tree with cost reduction effects, then follow the stack from Card.isOwnedBy through SpellCastFromAnywhereOtherThanHand and SpellsCostReductionControllerEffect. Inspect the transformed activation path in SpellTransformedAbility and related stack entries. Done means the underlying missing ownerId cause is identified and the cast no longer throws a NullPointerException.

Written by the indexing model from the issue text.