Al-Haber, the Tower of Despair (ABC-RD-007 R) [Arcana Battle Colosseum]

[CONT] When a resonator your opponent controls is put into a graveyard, put a despair counter on this card. [CONT] At the beginning of your main phase, if there are seven or more despair counters on this card, banish it and you may search your main deck for up to two darkness resonators and play them without paying their cost. Then shuffle your deck afterward.