First, if your Ring-bearer is small, well need ways to increase the power: Equipment seems perfect for this, since another creature can wield it until you want to hand it off to the Ring-bearer
To make matters worse, the deck naturally wants to run fetchlands that you can play again from the graveyard with Muldrothas ability, so youre actually stripping lands out of the deck for you to draw
Same with Mantis Rider
However, there's no official numbering
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However, at the cost of four, I dont think that quite adds up