In a sense, they are the Traps that sit in your hand at the start of the duel, making it important for you to have them if youre forced to go second
Wolfcallers Howl and Growing Ranks fill the board with wolves turn after turn
The best Trick or Trade card depends on what you value: rarity, art, stamp, or Pokemon character
If your "Mekk-Knight" monster battles a monster in a different column than it, your monster cannot be destroyed by that battle, also you take no battle damage from that battle.
Cards that get better when you cast or control permanents you dont own, like Agent of Treachery, are good in these situations
Theyre called ACE SPEC cards and they are extremely powerful