Arcum's Whistle

Artifact -
{3}, {T}: Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That player may pay {X}, where X is that creature's converted mana cost. If they don't pay, the creature attacks this turn if able, and at the beginning of the next end step, destroy it if it didn't attack this turn. Activate this ability only before attackers are declared.

Artifact -
{3}, {T}: Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That player may pay {X}, where X is that mana value. If they don't pay, the creature attacks this turn if able, and at the beginning of the next end step, destroy it if it didn't attack this turn. Activate only before attackers are declared.

Artifact -
{3}, {T}: Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That player may pay {X}, where X is that creature's converted mana cost. If he or she doesn't, the creature attacks this turn if able, and at the beginning of the next end step, destroy it if it didn't attack this turn. Activate this ability only before attackers are declared.

Artifact -
{3}, {T}: Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That player may pay {X}, where X is that creature's converted mana cost. If they don't pay, the creature attacks this turn if able, and at the beginning of the next end step, destroy it if it didn't attack this turn. Activate this ability only before attackers are declared.

Artifact -
{3}, {T}: Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That player may pay {X}, where X is that creature's converted mana cost. If he or she doesn't, the creature attacks this turn if able, and at the beginning of the next end step, destroy it if it didn't attack. Activate this ability only before attackers are declared.

Artifact -
{3}, {T}: Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That player may pay {X}, where X is that creature's converted mana cost. If he or she doesn't, the creature attacks this turn if able, and at the beginning of the next end step, destroy it if it didn't attack this turn. Activate this ability only before attackers are declared.

Artifact -
{3}, {T}: Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That player may pay {X}, where X is that creature's converted mana cost. If he or she doesn't, the creature attacks this turn if able, and at end of turn, destroy it if it didn't attack. Play this ability only before attackers are declared.

Artifact -
{3}, {T}: Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That player may pay {X}, where X is that creature's converted mana cost. If he or she doesn't, the creature attacks this turn if able, and at the beginning of the next end step, destroy it if it didn't attack. Activate this ability only before attackers are declared.

Artifact -
{3}, {T}: Target non-Wall creature's controller may pay {X}, where X is that creature's converted mana cost. If he or she doesn't, the creature attacks this turn if able, and at end of turn, destroy it if it didn't attack. Play this ability only during the creature's controller's turn before attackers are declared. You can't target a creature that came under its controller's control this turn.

Artifact -
{3}, {T}: Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That player may pay {X}, where X is that creature's converted mana cost. If he or she doesn't, the creature attacks this turn if able, and at end of turn, destroy it if it didn't attack. Play this ability only before attackers are declared.