R Rare Scareclaw Twinsaw X TRAP Tribute 1 "Scareclaw" monster, then target 2 cards your opponent controls
The important things it will teach you, however, are where your cards go, when they go in those places, what order a game goes in, etc
But if you are struggling to get enough creatures for your deck, then you're going to want to stay away from Prey Upon and Blazing Torch
In most scenarios, it is best to let the ward trigger offer the cost to your opponent, if they pay that cost, you can still counter the removal spell or ability since they go on the stack like other effects
Cost reduction mechanics are among Magic's most powerfuldelve and affinity have terrorized many a constructed format, and the legendary moxen remain among Magic's most fabled examples of "Power" to this day