Esper Sentinel [Modern Horizons 2] Tempest Promos puts them onto the battlefield

puts them onto the battlefield

Set: Legends Type: Artifact Creature — Shapeshifter Rarity: Rare Cost: {4} {0}: Change Sentinel's base toughness to 1 plus the power of target creature blocking or blocked by Sentinel

Set: Time Spiral Type: Artifact Creature — Construct Rarity: Rare Cost: {5} Indestructible

While it's phased out

reveal that many cards from the top of your library

Esper Sentinel [Modern Horizons 2] Tempest Promos puts them onto the battlefieldSet: Modern Horizons 2 Type: Artifact Creature Human Soldier Rarity: Rare Cost: {W} Whenever an opponent casts their first noncreature spell each turn, draw a card unless that player pays {X}, where X is Esper Sentinel's power. The more Esper changes, the more he refuses to.