There doesnt seem to be a downside to this card, and it will help you when you need him the most
Lorcana (lore + arcana) is a magical realm where players take on the role of Illumineers and use magical ink to summon "Glimmers" (copies) of Disney characters from various stories, some familiar and some with bizarre twists, to help them collect lore (victory points)
You can keep reanimating as long as you have mana with Apprentice Necromancer, but does this color use that many creatures
If you'd rather have some less specific nonsense, however, then there is one other combo I found that involves all one-cost or less artifacts, creatures, or enchantments
The fact that it returns to your hand as opposed to the battlefield, as well as the steep cost of three life, means Blood Operative is relatively slow
Decks that go wide benefit greatly from red enchantments like Purphoros, God of the Forge and other Impact Tremors variants