Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
: Urza's Engine gains banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.) until end of turn.
: Attacking creatures banded with Urza's Engine gain trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.) until end of turn.
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