Rallying CryW
Instant (Common)
Recoil W(You may cast this for its recoil cost if a card was put into your hand from the battlefield this turn.)
Create a 1/1 white Soldier creature token. If Rallying Cry's recoil cost was paid, create three of those tokens instead.
Wayward PathU
Instant (Common)
Recoil U(You may cast this for its recoil cost if a card was put into your hand from the battlefield this turn.)
Return target creature to its owner's hand. If Wayward Path's recoil cost was paid, put that creature on top of its owner's library instead.
Pull of UndeathB
Instant (Common)
Recoil B(You may cast this for its recoil cost if a card was put into your hand from the battlefield this turn.)
Target creature gets -2/-2 until end of turn. If Pull of Undeath's recoil cost was paid, that creature gets -4/-4 until end of turn instead.
Curved LightningR
Instant (Common)
Recoil R(You may cast this for its recoil cost if a card was put into your hand from the battlefield this turn.)
Curved Lightning deals 2 damage to any target. If Curved Lightning's recoil cost was paid, it deals 4 damage to that permanent or player instead.
Survey the LandG
Sorcery (Common)
Recoil G(You may cast this for its recoil cost if a card was put into your hand from the battlefield this turn.)
Search your library for a basic land card, reveal it, put it into your hand, then shuffle your library. If Survey the Land's recoil cost was paid, put that card onto the battlefield instead of putting it into your hand.
Card Name1UU
Instant (Rare)
Recoil U(You may cast this for its recoil cost if a card was put into your hand from the battlefield this turn.)
Counter target spell.
Card Name1R
Sorcery (Common)
Recoil—Discard a card. (You may cast this for its recoil cost if a card was put into your hand from the battlefield this turn.)
As an additional cost to cast this spell, discard a card.
Draw two cards.
Card Name1G
Instant (Common)
Recoil 0(You may cast this for its recoil cost if a card was put into your hand from the battlefield this turn.)
Prevent all combat damage that would be dealt this turn.
Instant (Common)
Recoil W (You may cast this for its recoil cost if a card was put into your hand from the battlefield this turn.)
Create a 1/1 white Soldier creature token. If Rallying Cry's recoil cost was paid, create three of those tokens instead.
Wayward Path U
Instant (Common)
Recoil U (You may cast this for its recoil cost if a card was put into your hand from the battlefield this turn.)
Return target creature to its owner's hand. If Wayward Path's recoil cost was paid, put that creature on top of its owner's library instead.
Pull of Undeath B
Instant (Common)
Recoil B (You may cast this for its recoil cost if a card was put into your hand from the battlefield this turn.)
Target creature gets -2/-2 until end of turn. If Pull of Undeath's recoil cost was paid, that creature gets -4/-4 until end of turn instead.
Curved Lightning R
Instant (Common)
Recoil R (You may cast this for its recoil cost if a card was put into your hand from the battlefield this turn.)
Curved Lightning deals 2 damage to any target. If Curved Lightning's recoil cost was paid, it deals 4 damage to that permanent or player instead.
Survey the Land G
Sorcery (Common)
Recoil G (You may cast this for its recoil cost if a card was put into your hand from the battlefield this turn.)
Search your library for a basic land card, reveal it, put it into your hand, then shuffle your library. If Survey the Land's recoil cost was paid, put that card onto the battlefield instead of putting it into your hand.
Fine cycle but perhaps not the best showcase of what I'm assuming would be a typical use of the mechanic, meaning cost reduction.
I̟̥͍̠ͅn̩͉̣͍̬͚ͅ ̬̬͖t̯̹̞̺͖͓̯̤h̘͍̬e͙̯͈̖̼̮ ̭̬f̺̲̲̪i͙͉̟̩̰r̪̝͚͈̝̥͍̝̲s̼̻͇̘̳͔ͅt̲̺̳̗̜̪̙ ̳̺̥̻͚̗ͅm̜̜̟̰͈͓͎͇o̝̖̮̝͇m̯̻̞̼̫̗͓̤e̩̯̬̮̩n͎̱̪̲̹͖t͇̖s̰̮ͅ,̤̲͙̻̭̻̯̹̰ ̖t̫̙̺̯͖͚̯ͅh͙̯̦̳̗̰̟e͖̪͉̼̯ ̪͕g̞̣͔a̗̦t̬̬͓͙̫̖̭̻e̩̻̯ ̜̖̦̖̤̭͙̬t̞̹̥̪͎͉ͅo͕͚͍͇̲͇͓̺ ̭̬͙͈̣̻t͈͍͙͓̫̖͙̩h̪̬̖̙e̗͈ ̗̬̟̞̺̤͉̯ͅa̦̯͚̙̜̮f͉͙̲̣̞̼t̪̤̞̣͚e̲͉̳̥r͇̪̙͚͓l̥̞̞͎̹̯̹ͅi͓̬f̮̥̬̞͈ͅe͎ ̟̩̤̳̠̯̩̯o̮̘̲p̟͚̣̞͉͓e͍̩̣n͔̼͕͚̜e̬̱d̼̘͎̖̹͍̮̠,͖̺̭̱̮ ̣̲͖̬̪̭̥a̪͚n̟̲̝̤̤̞̗d̘̱̗͇̮͕̳͕͔ ͖̞͉͎t̹̙͎h̰̱͉̗e̪̞̱̝̹̩ͅ ̠̱̩̭̦p̯̙e͓o̳͚̰̯̺̱̰͔̘p̬͎̱̣̼̩͇l̗̟̖͚̠e̱͉͔̱̦̬̟̙ ̖͚̪͔̼̦w̺̖̤̱e͖̗̻̦͓̖̘̜r̭̥e͔̹̫̱͕̦̰͕ ̗͔̠p̠̗͍͍̱̳̠r̰͔͎̰o͉̥͓̰͚̥s̟͚̹̱͔̣t͉̙̳̖͖̪̮r̥̘̥͙̹a͉̟̫̟̳̠̟̭t͈̜̰͈͎e̞̣̭̲̬ ͚̗̯̟͙i͍͖̰̘̦͖͉ṇ̮̻̯̦̲̩͍ ̦̮͚̫̤t͉͖̫͕ͅͅh͙̮̻̘̣̮̼e͕̺ ͙l͕̠͎̰̥i̲͓͉̲g̫̳̟͈͇̖h̠̦̖t͓̯͎̗ ̳̪̘̟̙̩̦o̫̲f̙͔̰̙̠ ̹̪̗͇̯t͖̼̼͉͖̬h̹͇̩e͚̖̺̤͉̹͕̪ ͚͓̭̝̺G͎̗̯̩o̫̯̮̟̮̳̘d̜̲͙̠-̩̳̯̲̗̜P̹̘̥͉̝h͍͈̗̖̝ͅa͍̗̮̼̗r̜̖͇̙̺a̭̺͔̞̳͈o̪̣͓̯̬͙̯̰̗h̖̦͈̥̯͔.͇̣̙̝
Instant (Rare)
Recoil U (You may cast this for its recoil cost if a card was put into your hand from the battlefield this turn.)
Counter target spell.
Card Name 1R
Sorcery (Common)
Recoil—Discard a card. (You may cast this for its recoil cost if a card was put into your hand from the battlefield this turn.)
As an additional cost to cast this spell, discard a card.
Draw two cards.
Card Name 1G
Instant (Common)
Recoil 0 (You may cast this for its recoil cost if a card was put into your hand from the battlefield this turn.)
Prevent all combat damage that would be dealt this turn.