LINN, the Nanite Assassin

Trigger - Enter: Target opponent diminishes one card. Then, you may put one Bounty Counter on target Clash card you don't control. (They put the top card of their deck into their Oblivion.)

At the end of your turn, if one or more Clash cards with Bounty Counters were defeated this turn, you may put target Clash card with an initial resource cost of two or less from any Oblivion into your Clash Zone.