pokemon card mewtwo and mew & GX 71/236 Holo Rare Unified Minds Near Mint Psychic Rarity Mewtwo & Mew 2019 Pokemon

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Stalwart Shield-Bearers

cards that lose or gain a significant amount of life along the lines of Grim Feast or Bolass Citadel, cards that let you untap Willowdust like Instill Energy or copy the ability like Rings of Brighthearth, plus the usual +1 counter enablers like Doubling Season or Solidarity of Heroes

I think Endless One could be fine in a deck that has a focus on the +1/+1 counters on your creatures with cards like Avatar of the Resolute, but as a big payoff spell, the other options are miles better

Between that and Madam Medusa, Ruby is looking very likely to be the first ink colour to be hit with the banhammer when the time comes

Your opponent is probably not going to waste valuable deathtouch creatures on bad blocks