The clash keyword for instance can be a consistent way to do this, and its on a bunch of goblin cards youll already want to play like Adder-Staff Boggart
Sorcery Color tag templates(None) Tempted by the Oriq For each opponent, gain control of up to one target creature or planeswalker that player controls with mana value 3 or less
In paper, they all cost between $120 and $320, but on MTGO , each was less than $5
Its your sac outlet, card draw engine, and spot removal all in one tidy package
Well, its a card that led me on a new, personal deckbuilding adventure
Regardless of that it is fair to say that tapping your lands to draw cards is more of a tempo cost, particularly in blue, than leaving them open