Sure, you can use it to cast spells only from your graveyard, but in specific decks it works like a charm
It is instant and can even be a win condition, so moving on
C 0083 Wiccan, Rising Magician U 0084 The Wondrous Wasp R 0085 Agents of HYDRA C 0086 Arnim Zola, Bio-Fanatic U 0087 Baron Helmut Zemo R 0088 Baron Strucker, HYDRA Overlord U 0089 Black Widow, Super Spy M 0090 Construct a Cosmic Cube R 0091 Crossbones, Malicious Mercenary U 0092 Cruel Alliance C 0093 Dark Deed U 0094 Decoy Ploy C 0095 Doctor Doom M 0096 Doom Reigns Supreme R 0097 Elektra, Daughter of the Hand R 0098 Grim Reaper, Lethal Legionnaire U 0099 Hour of Defeat C 0100 HYDRA Infiltration C 0101 HYDRA Troopers C 0102 Kingpins Enforcers C 0103 Klaw, Sonic Subjugator U 0104 Madame Masque U 0105 The Masters of Evil U 0106 M.O.D.O.K
Taeko, the Patient Avalanche Taeko, the Patient Avalanche has a great leaves the battlefield trigger that looks to far more than ninjutsu to grow and scry
Therefore, it's back on my third list
Whenever Grma deals combat damage to a player, that player exiles cards from the top of their library until they exile an instant or sorcery card