Card Rulings:Ameba


 * This card's effect is not activated when equipped] to an opponent's "Relinquished" or "Thousand-Eyes Restrict".


 * If your opponent uses "Change of Heart" on a face-down "Ameba" and Flip Summons it, when it returns to you during the End Phase, its effect activates and you take 2000 damage.

Mentions in other rulings

 * Barrel Behind the Door: You can activate "Barrel Behind the Door" against Trigger Effects like "Lava Golem", "Giant Germ", "Relinquished" (when it inflicts effect damage, since "Barrel Behind the Door" can be activated during the Damage Step because it is a Counter-Trap Card), "Minar" (when discarded), "Parasite Paracide" (when it inflicts Effect Damage), "Bowganian", "Mushroom Man ", "Reflect Bounder" (when it is attacked), "Shinato, King of a Higher Plane" (when it attacks and destroys a Defense Position monster and sends it to the Graveyard), "Granadora" (when destroyed and sent to the Graveyard), "Balloon Lizard" (when destroyed), "KA-2 Des Scissors", "Needle Burrower", "Atomic Firefly", "Elephant Statue of Disaster", and "Ameba".


 * Possessed Dark Soul: If the opponent has more Level 3 or lower monsters on the field than you have empty Monster Card Zones after you Tribute this card (the Zone it occupied is now empty), you choose which ones to gain control of and the rest are destroyed. If you choose to destroy "Griggle" or "Ameba" in this manner, their effects do not activate since they never came to your side of the field.


 * Remove Brainwashing: When "Remove Brainwashing" is already active on the field and a switching effect is activated, or "Remove Brainwashing" is chained to a switching effect and is thus active before the switching effect resolves, control switches due to the effect but then switches back to the original owner because of "Remove Brainwashing". So for "Creature Swap", control is changed but then control goes back to the original owners. This means that if you give control of "Griggle" or "Ameba" to your opponent, their effect IS activated even though "Griggle"/"Ameba" then returns to the original owner's control afterwards.