Enchantment - Aura, 1R (2) Enchant creature you control Enchanted creature has "{T}: This creature deals 1 damage to target creature or player." Sacrifice Fire Whip: Fire Whip deals 1 damage to target creature or player.1
Illus. Jeff Miracola
The tap ability cannot be used by a creature with summoning sickness because the creature itself needs to tap. [Duelist Magazine #19, Page 34]
Remember that you tap the creature as part of the cost of announcing Fire Whip's granted ability. So, if you have two Fire Whips on a creature announcing the first one will tap the creature, so you cannot use the second one or any other ability which requires tapping the creature until you find a way to untap it. [D'Angelo 1997/06/23]
Is put into the graveyard if you lose control of the creature since the card text says it can only enchant a creature you control. [D'Angelo 1999/07/10]
Yes, any side effects due to the creature dealing damage do happen. [Duelist Magazine #19, Page 34] For example, giving poison counters.