Generous Patron — ruling 1

If you put one or more counters on multiple creatures you don't control at the same time, such as by supporting two different creatures you don't control, Generous Patron's last ability triggers for each of those creatures.

Generous Patron — ruling 2

Support can target a creature another player controls.

Generous Patron — ruling 3

You can't put more than one +1/+1 counter on any one target using the support action.

Generous Patron — ruling 4

If some, but not all, targets for a spell become illegal, the remaining targets are affected as appropriate. If all of a spell's targets become illegal, that spell doesn't resolve.

Generous Patron — ruling 5

If a spell with support has other abilities that target creatures, those abilities and the support ability can target the same creature.

Generous Patron — ruling 6

If a creature enters the battlefield with counters under another player's control, that player is the player who puts those counters on it, even if you control the spell or ability putting that creature onto the battlefield.

Generous Patron — ruling 7

Generous Patron's last ability triggers even if the counters you put on another player's creatures aren't +1/+1 counters.

Generous Patron : règles, fonctionnement et interactions (MTG)

Generous Patron is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

When this creature enters, support 2. (Put a +1/+1 counter on each of up to two other target creatures.) Whenever you put one or more counters on a creature you don't control, draw a card.

How it works : Generous Patron

Original English text — Wizards of the Coast / Scryfall

#1June 8, 2018· Wizards of the Coast
If you put one or more counters on multiple creatures you don't control at the same time, such as by supporting two different creatures you don't control, Generous Patron's last ability triggers for each of those creatures.
No other card is named in this ruling.
#2June 8, 2018· Wizards of the Coast
Support can target a creature another player controls.
No other card is named in this ruling.
#3June 8, 2018· Wizards of the Coast
You can't put more than one +1/+1 counter on any one target using the support action.
No other card is named in this ruling.
#4June 8, 2018· Wizards of the Coast
If some, but not all, targets for a spell become illegal, the remaining targets are affected as appropriate. If all of a spell's targets become illegal, that spell doesn't resolve.
No other card is named in this ruling.
#5June 8, 2018· Wizards of the Coast
If a spell with support has other abilities that target creatures, those abilities and the support ability can target the same creature.
No other card is named in this ruling.
#6June 8, 2018· Wizards of the Coast
If a creature enters the battlefield with counters under another player's control, that player is the player who puts those counters on it, even if you control the spell or ability putting that creature onto the battlefield.
No other card is named in this ruling.
#7June 8, 2018· Wizards of the Coast
Generous Patron's last ability triggers even if the counters you put on another player's creatures aren't +1/+1 counters.
No other card is named in this ruling.