Heldin des zehnten Distrikts

{1}{W}, Beweissicherung 2: Die Heldin des zehnten Distrikts wird zu einem Mensch-Detektiv mit Basis-Stärke und -Widerstandskraft 4/4 und erhält Wachsamkeit.
{2}{W}, Beweissicherung 4: Falls die Heldin des zehnten Distrikts ein Detektiv ist, wird sie zu einer legendären Kreatur namens Mileva die Unverzagte mit Basis-Stärke und -Widerstandskraft 5/5, und sie erhält „Andere Kreaturen, die du kontrollierst, haben Unzerstörbarkeit."

Héroïne de la dixième circonscription

{1}{W}, rassemblez des preuves 2 : L'Héroïne de la dixième circonscription devient un humain et détective avec une force et une endurance de base de 4/4 et acquiert la vigilance.
{2}{W}, rassemblez des preuves 4 : Si l'Héroïne de la dixième circonscription est un détective, elle devient une créature légendaire appelée Mileva, la Vaillante, elle a une force et une endurance de base de 5/5 et elle acquiert « Les autres créatures que vous contrôlez ont l'indestructible ».

第10管区の英雄

{1}{W}, 証拠収集２を行う：第10管区の英雄は基本のパワーとタフネスが４/４の人間・探偵になり、警戒を得る。
{2}{W}, 証拠収集４を行う：第10管区の英雄が探偵なら、これは「重鎮、ミレヴァ」という名前で基本のパワーとタフネスが５/５の伝説のクリーチャーになり、「あなたがコントロールしていてこれでないすべてのクリーチャーは破壊不能を持つ。」を得る。

第十区勇士

{1}{W}，搜证2：第十区勇士成为基础力量与防御力为4/4的人类／侦探且获得警戒异能。
{2}{W}，搜证4：如果第十区勇士是侦探，则它成为名称为坚兵米勒娃的传奇生物，其基础力量与防御力为5/5，且获得「由你操控的其他生物具有不灭异能。」

Tenth District Hero

{1}{W}, Collect evidence 2: This creature becomes a Human Detective with base power and toughness 4/4 and gains vigilance.
{2}{W}, Collect evidence 4: If this creature is a Detective, it becomes a legendary creature named Mileva, the Stalwart, it has base power and toughness 5/5, and it gains "Other creatures you control have indestructible."

Murders at Karlov Manor

{1}{W}, Collect evidence 2: Tenth District Hero becomes a Human Detective with base power and toughness 4/4 and gains vigilance.
{2}{W}, Collect evidence 4: If Tenth District Hero is a Detective, it becomes a legendary creature named Mileva, the Stalwart, it has base power and toughness 5/5, and it gains "Other creatures you control have indestructible."

Murders at Karlov Manor Promos

If you can't exile enough cards to meet or exceed the required mana value, you can't choose to collect evidence at all.

Neither of these abilities have durations. If one of them resolves, it will remain in effect until the game ends, Tenth District Hero leaves the battlefield, or some subsequent effect changes its characteristics, whichever comes first.

Once you've announced that you're casting a spell, players can't take actions until you've finished doing so. Notably, opponents can't try to remove cards from your graveyard to stop you from collecting evidence.

Tenth District Hero's second ability checks whether it's a Detective. It doesn't matter how it became a Detective.

The effects from Tenth District Hero's abilities overwrite other effects that set power and/or toughness if and only if those effects existed before the ability resolved. They will not overwrite effects that modify power or toughness without setting it (whether from a static ability, counters, or a resolved spell or ability), nor will they overwrite effects that set power and toughness which come into existence after they resolve. Effects that switch the creature's power and toughness are always applied after any other power or toughness changing effects, including these two, regardless of the order in which they are created.

Typically, Tenth District Hero's abilities are activated in the order they appear on the card. However, if Tenth District Hero is a 5/5 legendary Human Detective named Mileva, the Stalwart with vigilance and "Other creatures you control have indestructible" and you activate its first ability again, it will become a 4/4 legendary Human Detective named Mileva, the Stalwart with the same abilities, plus an additional (and almost certainly redundant) instance of vigilance.

You can activate Tenth District Hero's second ability regardless of what creature types it is. The ability checks Tenth District Hero's creature types when it resolves. If Tenth District Hero isn't a Detective at that time, the ability does nothing.