Name:Trail of Evidence
ManaCost:2 U
Types:Enchantment
T:Mode$ SpellCast | ValidCard$ Instant,Sorcery | ValidActivatingPlayer$ You | Execute$ DBToken | TriggerZones$ Battlefield | TriggerDescription$ Whenever you cast an instant or sorcery spell, investigate. (Create a colorless Clue artifact token with "{2}, Sacrifice this artifact: Draw a card.")
SVar:DBToken:DB$ Token | TokenAmount$ 1 | TokenName$ Clue | TokenTypes$ Artifact,Clue | TokenOwner$ You | TokenColors$ Colorless | TokenImage$ c clue | TokenAbilities$ ABDraw | TokenAltImages$ c_clue2,c_clue3,c_clue4,c_clue5,c_clue6
SVar:ABDraw:AB$ Draw | Cost$ 2 Sac<1/CARDNAME> | NumCards$ 1 | SpellDescription$ Draw a card.
DeckNeeds:Type$Instant|Sorcery
DeckHas:Ability$Investigate & Ability$Token
Oracle:Whenever you cast an instant or sorcery spell, investigate. (Create a colorless Clue artifact token with "{2}, Sacrifice this artifact: Draw a card.")