If youre going to cheat an artifact onto the battlefield with a card like Tinker, youd better be able to win the game on the spot (or by your next attack)
If thats the case, Im totally wrong on the value
Whenever a player would get priority (see rule 117, Timing and Priority), the game checks for any of the listed conditions for state-based actions, then performs all applicable state-based actions simultaneously as a single event
Of course, there are cards that combo well with Grandmaster Wizard allowing you to further draw more cards
BATTLE ALONGSIDE ICONIC FINAL FANTASY HEROESJoin forces with Terra, Herald of Hope in the Revival Trance deck, Cloud, Ex-SOLDIER in the Limit Break deck, Tidus, Yunas Guardian in the Counter Blitz deck, and Yshtola, Nights Blessed in the Scions & Spellcraft deck