FlyingFlying is an evasion ability.
A creature with flying can’t be blocked except by creatures with flying and/or reach. A creature with flying can block a creature with or without flying. (See rule 509, “Declare Blockers Step,” and rule 702.17, “Reach.”)
Multiple instances of flying on the same creature are redundant. (CR 702.9)
When this creature enters, return target noncreature, nonland permanent card with mana value X or less from your graveyard to the battlefield, where X is the amount of mana spent to
castTo cast a spell is to take it from the zone it’s in (usually the hand), put it on the stack, and pay its costs, so that it will eventually resolve and have its effect. A player may cast a spell if they have priority. See rule 601, “Casting Spells.”
To cast a card is to cast it as a spell. (CR 701.5) this creature.
WarpWarp represents two static abilities that function while the card with warp is on the stack, one of which may create a delayed triggered ability. “Warp [cost]” means “You may cast this card from your hand by paying [cost] rather than its mana cost” and “If this spell’s warp cost was paid, exile the permanent this spell becomes at the beginning of the next end step. Its owner may cast this card after the current turn has ended for as long as it remains exiled.” Casting a spell for its warp cost follows the rules for paying alternative costs in rules 601.2b and 601.2f–h.
Some effects refer to “warped” cards in exile. A warped card in exile is one that was exiled by the delayed triggered ability created by a warp ability.
Some effects refer to whether “a spell was warped this turn.” This means that a spell was cast for its warp cost this turn. (CR 702.185)