What is the rarity of this Mega Gengar ex card
The classic cards to dish out with a Harmless Offering are cards that are bad to control
The first are the dual lands: two lands in one that produce your choice of two colors when they come into play
The value is there
Those cards are: Essence of Orthodoxy, Seedpod Caretaker, Phyrexian Pegasus, Interdisciplinary Mascot, Referee Squad, Zephyr Winder, Terror of Towashi, Seer of Stolen Sight, Injector Crocodile, Orthion, Hero of Lavabrink, Axgard Artisan, Cragsmasher Yeti, Surrak and Goreclaw, Ruins Recluse, and Fairgrounds Trumpeter.
When this attacking card destroys an opponent's monster by battle: You can target 1 FIRE monster in your GY