30th Anniversary Edition

Fastbond

You may play any number of lands on each of your turns.
Whenever you play a land, if it wasn't the first land you played this turn, Fastbond deals 1 damage to you.

Vintage Masters

Masters Edition IV

You may play any number of additional lands on each of your turns.
Whenever you play a land, if it wasn't the first land you played this turn, Fastbond deals 1 damage to you.

Summer Magic / Edgar

Foreign Black Border

Revised Edition

You may put as many lands into play as you want each turn. Fastbond does 1 damage to you for every land beyond the first that you play in a single turn.