Is there a rule preventing multiple copies of biothaumaturgi

Biothaumaturgic Experiment
Type: Action
Requires: Thaumaturgy
Cost: 1 pool
+1 stealth action.
[tha] This minion employs an animal retainer from your hand (ignore requirements; pay cost as normal).
[THA] Put this card on a minion you control. The minion with this card gets an optional maneuver each combat and +1 strength.

is there anything that prevents me from placing multiple copies of this card on the same minion?

multiple copies on the same minion are ok!

Agamemnon wrote:

Biothaumaturgic Experiment
Type: Action
Requires: Thaumaturgy
Cost: 1 pool
+1 stealth action.
[tha] This minion employs an animal retainer from your hand (ignore requirements; pay cost as normal).
[THA] Put this card on a minion you control. The minion with this card gets an optional maneuver each combat and +1 strength.

is there anything that prevents me from placing multiple copies of this card on the same minion?

Apart from the NRA, no.
NRA prevents you from performing the same action with the same vampire more than once each turn.