Death, the Endbringer (Iconic Rare)

Exclusive At the start of your turn, if the Portal is open, you may put target Clash card with an initial resource cost of three or less from your Oblivion into your Clash Zone. If that card is a (Harbinger symbol) Clash card, it gets +2/+2 and Necrotic until end of turn. At the start of each opponent's turn, that opponent must send one Clash card they control to Oblivion.