Ball Lightning

{R}{R}{R}Creature — Elemental6/1

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

Haste (This creature can attack and {T} as soon as it comes under your control.)

At the beginning of the end step, sacrifice this creature.

Haste. This creature can attack and use tap abilities as soon as it comes under your control. · CR 702.10

Trample. Excess combat damage beyond what's lethal to blockers can be assigned to the player or planeswalker it's attacking. · CR 702.19

The creature is sacrificed at the end of every turn in which it is on the battlefield. There is no choice about what turn to sacrifice it. (2007-02-01)

Cards like this

Functionally similar cards by meaning — playable in Ball Lightning’s colours.