Caltrops [Urza's Destiny] Zendikar Promos put it on top of

put it on top of its owner's library instead of into that player's graveyard

The same is true for creature spells you control and creature cards you own that aren't on the battlefield

Auntie always knows which berries to lick

sacrifice Frenetic Efreet

Set: Limited Edition Beta Type: Creature — Imp Uncommon Cost: {2}{B} {T}: Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn

Caltrops [Urza's Destiny] Zendikar Promos put it on top ofSet: Urza's Destiny Type: Artifact Uncommon Cost: {3} Whenever a creature attacks, Caltrops deals 1 damage to it. Toward the end, Gatha struggled to keep his experiments in and his patrons out.