Flavor questions aside, being able to recur this card from the graveyard sounds like a strong source of card advantage, especially if you have some mutate triggers already in play for it to benefit from
If I get two or three cascades off, I get a huge board presence
Will you use it to punish delve strategies by emptying their graveyards
Similarly to Blood Moon, which is not at its strongest in Modern right now, the time might just not be right for Esper Sentinel and maybe in a different Metagame he ends up at the Top of our list
New to the Spider-Man set, web-slinging lets you cast a spell at a discount if you return a tapped creature to your hand
// Trance Kuja, Fate Defied Legendary Creature Avatar Wizard 4/6 Flame Star If a Wizard you control would deal damage to a permanent or player, it deals double that damage instead