Ink-Eyes, Servant of Oni (Borderless) New Stock put that many loyalty counters

put that many loyalty counters on The Aetherspark

Sacrifice them at the beginning of the next end step

Whenever you gain life

Sacrifice this land: Draw a card

Return up to one target creature card with mana value less than or equal to the amount of life you lost this turn from your graveyard to the battlefield

Ink-Eyes, Servant of Oni (Borderless) New Stock put that many loyalty countersNinjutsu {3}{B}{B} ({3}{B}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) Whenever Ink Eyes deals combat damage to a player, you may put target creature card from that player's graveyard onto the battlefield under your control. {1}{B}: Regenerate Ink Eyes.