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.

Flying Sacrifice Judge's Familiar: Counter target instant or sorcery spell unless its controller pays {1}.

Flying Whenever another Spirit enters the battlefield under your control, Mausoleum Wanderer gets +1/+1 until end of turn. Sacrifice Mausoleum Wanderer: Counter target instant or sorcery spell unless its controller pays {X}, where X is Mausoleum Wanderer's power.

Flying When Sky Hussar enters the battlefield, untap all creatures you control. Forecast — Tap two untapped white and/or blue creatures you control, Reveal Sky Hussar from your hand: Draw a card. (Activate only during your upkeep and only once each turn.)

Flash Lifelink When Solitude enters the battlefield, exile up to one other target creature. That creature's controller gains life equal to its power. Evoke—Exile a white card from your hand.

Draw three cards, then put two cards from your hand on top of your library in any order.

You may return an Island you control to its owner's hand rather than pay this spell's mana cost. Counter target spell unless its controller pays {1}.

If it's not your turn, you may exile a blue card from your hand rather than pay this spell's mana cost. Counter target noncreature spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

{T}, Pay 1 life, Sacrifice Flooded Strand: Search your library for a Plains or Island card, put it onto the battlefield, then shuffle.

({T}: Add {U}.)

{T}: Add {W}. {T}: Return target legendary creature to its owner's hand.

({T}: Add {W}.)

({T}: Add {W} or {U}.)

Draw three cards. Islandcycling {1} ({1}, Discard this card: Search your library for an Island card, reveal it, put it into your hand, then shuffle.)