I mean, without that restriction, he'd immediately go infinite by himself, so it seems like we're stuck playing by Wizards ' rules
Presumably there will be some other cards in the mix, but this top eight is based on the cards spoiled so far
Sanctum Weaver A card tapping for big piles of mana never caused any problems, so well be just fine
For example, its probably worse than Wayward Servant in zombie tribal, Soul Warden in life gain, Zulaport Cutthroat in aristocrats, or Corpse Knight in a tokens list

17%inclusion 8%synergy 88 decks 508 decks Blind Obedience 15%inclusion 5%synergy 86 decks 570 decks Leyline of Hope 15%inclusion 11%synergy 83 decks 570 decks Trouble in Pairs 14%inclusion -1%synergy 79 decks 570 decks True Conviction 14%inclusion 5%synergy 78 decks 570 decks Friendly Neighborhood 12%inclusion 12%synergy 61 decks 501 decks Ghostly Prison 12%inclusion -9%synergy 69 decks 570 decks Sigarda's Splendor 12%inclusion 7%synergy 66 decks 570 decks Darksteel Mutation 11%inclusion -5%synergy 65 decks 570 decks Light of Promise 10%inclusion 5%synergy 55 decks 570 decks Smuggler's Share 9.1%inclusion 1%synergy 52 decks 570 decks Griffin Aerie 7.9%inclusion 5%synergy 45 decks 570 decks Origin of Spider-Man 7.9%inclusion 8%synergy 45 decks 570 decks Angelic Accord 7.2%inclusion -2%synergy 41 decks 570 decks Dollmaker's Shop // Porcelain Gallery 7.0%inclusion 4%synergy 40 decks 570 decks Political Triumph 6.5%inclusion 6%synergy 6 decks 92 decks Avengers Assemble

Indestructible Creature Enchantment - Knight Saga Tom Bombadil As long as there are four or more lore counters among Sagas you control, Tom Bombadil has hexproof and indestructible