Battleguard Echoes

When this card is activated: You can add 1 Level 5 EARTH Warrior monster from your Deck to your hand, then discard 1 card. Once per turn, if a monster(s) is returned from the field to the hand, even during the Damage Step: You can activate 1 of these effects;
• Add 1 "Battleguard Rage" or "Battleguard Howling" from your Deck to your hand.
• Change 1 face-up monster on the field to face-down Defense Position.
You can only activate 1 "Battleguard Echoes" per turn.