29 , for the majority of players
Trainer Gallery cards are different altogether, with their numbering separating them from the main set entirely, and into their own subset, identified by TG
For artifact ramp, while I own a Mana Crypt and a Mana Vault, our league is no-proxy and I don't feel like pulling those bad boys out of the deck they've been living in for the past few years
The rapidly accumulating card advantage alongside dealing extra damage each time a ninja you control connects in combat can quickly snowball games, especially when a 1-drop gets through unchecked on turn 2
In the meantime, we are stuck with glorified Cancel, and this may see its way into Standard control decks
If Synth Eradicator exiles a land card, you can play it in your second main phase as your land drops for the turn