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The main things he has going for him are his Esper color identity, his consistent source of card draw, and his powerful (but expensive) activated ability

In decks like Dragon Link that are comprised entirely of Lights and Darks this is practically a free +1

Decks like that basically never ran out of cards in hand, so they could increase their land count and ensure they always had the means to maximize their late-game haymakers

The effects are just too weak for their costs to compete with other options available in eternal formats

Rakdos Charm [Wizard deck]: The exile clause can stop an opponent who depends on their graveyard