Kjeldoran Javelineer

Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) {T}: This creature deals damage equal to the number of age counters on it to target attacking or blocking creature.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6o9xdm6kxppb1hkxjcb2cx.