Karn, Silver Golem
0a53d0e7-2dfd-48d3-88a8-286736b1e0d4
$1.00 CND
Whenever Karn, Silver Golem blocks or becomes blocked, it gets -4/+4 until end of turn.
{1}: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its converted mana cost until end of turn.